# Sendero Resources Rebuilds Peñas Negras Drill Assay Database, Applying Consistent CuEq Methodology Across 77 Historical Holes Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56 Original source: https://www.thenewswire.com/press-releases/1LymF9yEy-sendero-resources-rebuilds-penas-negras-drill-assay-database-applying-consistent-cueq-methodology-across-77-historical-holes.html Publisher: thenewswire Original announcement: 2026-09-23T13:01:29.581Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Sendero Resources Corp. - Ticker: SEND - Exchange: Unavailable - Region: La Rioja province, Argentina - Primary commodity: Copper - Secondary commodities: Gold, Silver, Molybdenum, Zinc, Lead - Document categories: Drill results - Extracted: 2026-09-23 13:06:10 UTC Narrative sentiment: 0.40 · Bullish ## Minestarters Atlas summary Sendero Resources has re-evaluated 77 historical drill holes at its Peñas Negras copper-gold project in Argentina, applying a consistent copper equivalent \(CuEq\) methodology. This re-analysis provides a project-wide view of mineralization, which starts near surface and extends to over 350 meters downhole, reinforcing the company's excitement for the project. The company also noted that its drill program is fully funded. Reasoning: Sendero Resources has re-evaluated 77 historical drill holes at the Peñas Negras project using a consistent CuEq methodology, providing a unified view of mineralization that starts near surface and extends to depth, reinforcing the project's potential and supporting a fully funded future drill program. While the data is historical, the consistent re-evaluation and clear CuEq assumptions add value. - Positive factor: Consistent CuEq methodology applied across historical data provides a unified project view. - Positive factor: Mineralization starts near surface and extends to depth. - Positive factor: Project is fully funded for future drill programs. - Negative factor: Results are a re-evaluation of historical data, not new drilling. - Negative factor: CuEq calculation assumes 100% recovery for all metals, which is for illustrative purposes only. - Negative factor: True thickness of mineralized intervals is not stated. Facts used in scoring: 222 ## Classification and evidence **Metal Equivalent Opaque** Polarity: negative Definition: Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. Requires an actual metal equivalent grade; a combined elemental basket such as PGE is not a metal equivalent. Why it applies: The CuEq calculation assumes 100% recoveries for all metals, which is stated to be for illustrative purposes only and actual future recoveries may differ, making the equivalent grade less reliable for economic assessment. Evidence · text > with 100% recoveries assumed for all metals \(since it is unclear what metals will be the principal products, assuming different recoveries is premature at this stage\). The 100% recovery assumption is for illustrative purposes only and actual future recoveries may differ. **Apparent Width Only** Polarity: negative Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. Why it applies: Reported intervals are drill-indicated \(downhole\) lengths, and true thickness is not stated. Evidence · text > Reported intervals are drill-indicated \(downhole\) lengths and insufficient data are currently available to state the true thickness of the mineralized intervals . **QP/CP Signed** Polarity: positive Story-specific tag Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: Steven McMullan, P. Geo., a consultant to the Company, supervised and approved the scientific and technical information. Evidence · text > Steven McMullan, P. Geo., a consultant to the Company and member of the Board supervised the preparation of and reviewed and approved the scientific and technical information pertaining to Peñas Negras Project contained in this news release. Mr. McMullan is a qualified person as defined by National Instrument 43-101 Standards of Disclosure for Mineral Projects. **NI 43-101 Compliant** Polarity: positive Story-specific tag Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The technical information is approved by a Qualified Person as defined by National Instrument 43-101. Evidence · text > Mr. McMullan is a qualified person as defined by National Instrument 43-101 Standards of Disclosure for Mineral Projects. **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: The document is a re-evaluation of historical drilling, not new assay results. Evidence · text > Sendero Resources Rebuilds Peñas Negras Drill Assay Database, Applying Consistent CuEq Methodology Across 77 Historical Holes ## Extracted facts Stored fact records: 222. Some facts used in scoring do not have a stored record. ## Drill Results (222) ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-0) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 770 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 236.1m at 0.57% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 770 Context: PNDH-06 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-1) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.27 - Grade Unit: g/t - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 236.1m at 0.27 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.27 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-2) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 5.87 - Grade Unit: g/t - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 236.1m at 5.87 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for silver. Evidence · table > 5.87 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-3) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 33.4 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 236.1m at 33.4 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 33.4 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-4) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2036 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 236.1m at 2036 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for zinc. Evidence · table > 2036 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-5) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 806 - Grade Unit: ppm - Intercept: 236.1 m - From: 31.9 m - To: 268 m - Intercept Depth: 31.9 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:31.9-268 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.57 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 236.1m at 806 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for lead. Evidence · table > 806 Context: 236.1 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-6) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 927 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A higher-grade historical intercept of 44.2m at 1.23% CuEq within a broader zone, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Higher grade within a broader interval. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 927 Context: PNDH-06 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-7) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44.2m at 0.4 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.4 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-8) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 23.55 - Grade Unit: g/t - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44.2m at 23.55 g/t Ag, part of a re-evaluated dataset, indicates a low silver grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for silver. Evidence · table > 23.55 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-9) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 40.1 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44.2m at 40.1 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 40.1 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-10) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 5829 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44.2m at 5829 ppm Zn, part of a re-evaluated dataset, indicates a moderate zinc grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for zinc. Evidence · table > 5829 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-11) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3567 - Grade Unit: ppm - Intercept: 44.2 m - From: 33.8 m - To: 78 m - Intercept Depth: 33.8 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:33.8-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.23 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44.2m at 3567 ppm Pb, part of a re-evaluated dataset, indicates a moderate lead grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for lead. Evidence · table > 3567 Context: 44.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-12) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1535 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.53 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A high-grade historical intercept of 24m at 1.53% CuEq, re-evaluated with a consistent methodology, represents a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: High-grade intercept within a broader zone. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1535 Context: PNDH-06 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-13) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.53 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 24m at 0.4 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.4 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-14) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 28.32 - Grade Unit: g/t - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.53 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 24m at 28.32 g/t Ag, part of a re-evaluated dataset, indicates a low silver grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for silver. Evidence · table > 28.32 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-15) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 38.3 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.53 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 24m at 38.3 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 38.3 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-16) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 10679 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.53 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 24m at 10679 ppm Zn, part of a re-evaluated dataset, indicates a moderate zinc grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for zinc. Evidence · table > 10679 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-06 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-17) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-06 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3813 - Grade Unit: ppm - Intercept: 24 m - From: 54 m - To: 78 m - Intercept Depth: 54 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-06:54-78 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.53 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 24m at 3813 ppm Pb, part of a re-evaluated dataset, indicates a moderate lead grade within a significant width, but the data is historical. - Positive factor: Higher grade within a broader interval. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for lead. Evidence · table > 3813 Context: 24 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-18) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1372 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 268m at 0.49% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1372 Context: PNDH-03 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-19) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.29 - Grade Unit: g/t - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 268m at 0.29 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.29 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-20) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.74 - Grade Unit: g/t - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 268m at 0.74 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 0.74 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-21) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 45.6 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 268m at 45.6 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 45.6 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-22) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 152 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 268m at 152 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 152 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-23) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 33 - Grade Unit: ppm - Intercept: 268 m - From: 84 m - To: 352 m - Intercept Depth: 84 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:84-352 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 268m at 33 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 33 Context: 268 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-24) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1834 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 62m at 0.66% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1834 Context: PNDH-03 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-25) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.37 - Grade Unit: g/t - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 62m at 0.37 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.37 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-26) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.12 - Grade Unit: g/t - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 62m at 1.12 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 1.12 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-27) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 70.2 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 62m at 70.2 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 70.2 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-28) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 284 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 62m at 284 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 284 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-29) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 55 - Grade Unit: ppm - Intercept: 62 m - From: 92 m - To: 154 m - Intercept Depth: 92 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-03:92-154 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 62m at 55 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 55 Context: 62 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-30) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1299 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 266m at 0.48% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1299 Context: PNDH-04 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-31) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.22 - Grade Unit: g/t - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 266m at 0.22 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.22 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-32) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.22 - Grade Unit: g/t - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 266m at 2.22 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 2.22 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-33) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 39 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 266m at 39 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 39 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-34) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1308 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 266m at 1308 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for zinc. Evidence · table > 1308 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-35) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 467 - Grade Unit: ppm - Intercept: 266 m - From: 96 m - To: 362 m - Intercept Depth: 96 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:96-362 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.48 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 266m at 467 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for lead. Evidence · table > 467 Context: 266 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-36) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1905 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 0.61% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1905 Context: PNDH-04 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-37) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.3 - Grade Unit: g/t - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 0.3 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.3 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-38) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.73 - Grade Unit: g/t - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 1.73 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 1.73 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-39) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 42.8 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 42.8 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 42.8 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-40) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 775 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 775 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 775 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-04 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-41) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-04 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 308 - Grade Unit: ppm - Intercept: 52 m - From: 122 m - To: 174 m - Intercept Depth: 122 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-04:122-174 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 308 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 308 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-42) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 757 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 208.4m at 0.56% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 757 Context: PND-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-43) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.38 - Grade Unit: g/t - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 208.4m at 0.38 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.38 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-44) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.54 - Grade Unit: g/t - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 208.4m at 1.54 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 1.54 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-45) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 23.3 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 208.4m at 23.3 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 23.3 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-46) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 699 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 208.4m at 699 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 699 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-47) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 195 - Grade Unit: ppm - Intercept: 208.4 m - From: 38.6 m - To: 247 m - Intercept Depth: 38.6 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:38.6-247 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.56 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 208.4m at 195 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 195 Context: 208.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-48) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1405 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 43.6m at 1.0% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1405 Context: PND-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-49) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.75 - Grade Unit: g/t - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 43.6m at 0.75 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.75 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-50) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.47 - Grade Unit: g/t - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 43.6m at 0.47 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 0.47 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-51) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 34.2 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 43.6m at 34.2 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 34.2 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-52) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 461 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 43.6m at 461 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 461 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PND-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-53) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PND-02 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 79 - Grade Unit: ppm - Intercept: 43.6 m - From: 47.4 m - To: 91 m - Intercept Depth: 47.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PND-02:47.4-91 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 43.6m at 79 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 79 Context: 43.6 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-54) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 104 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 102m at 0.93% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 104 Context: PNR-28 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-55) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.78 - Grade Unit: g/t - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 102m at 0.78 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.78 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-56) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.84 - Grade Unit: g/t - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 102m at 1.84 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 1.84 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-57) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.6 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 102m at 2.6 ppm Mo, part of a re-evaluated dataset, indicates a very low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for molybdenum. Evidence · table > 2.6 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-58) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 737 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 102m at 737 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 737 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-59) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 283 - Grade Unit: ppm - Intercept: 102 m - From: 56 m - To: 158 m - Intercept Depth: 56 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:56-158 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.93 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 102m at 283 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 283 Context: 102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-60) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 157 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.95 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A high-grade historical intercept of 32m at 1.95% CuEq, re-evaluated with a consistent methodology, represents a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: High-grade intercept within a broader zone. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 157 Context: PNR-28 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-61) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.69 - Grade Unit: g/t - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.95 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 1.69 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 1.69 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-62) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3.48 - Grade Unit: g/t - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.95 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 3.48 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 3.48 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-63) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.4 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.95 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 2.4 ppm Mo, part of a re-evaluated dataset, indicates a very low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for molybdenum. Evidence · table > 2.4 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-64) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 489 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.95 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 489 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 489 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-65) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 189 - Grade Unit: ppm - Intercept: 32 m - From: 100 m - To: 132 m - Intercept Depth: 100 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:100-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.95 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 189 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 189 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-66) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 118 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 23.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A very high-grade historical intercept of 2m at 23.15% CuEq, re-evaluated with a consistent methodology, represents a bonanza grade over a narrow width, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Very high-grade intercept. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: Narrow intercept length. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 118 Context: PNR-28 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-67) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 20.58 - Grade Unit: g/t - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 23.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A very high-grade historical intercept of 2m at 20.58 g/t Au, part of a re-evaluated dataset, indicates a bonanza gold grade over a narrow width, but the data is historical. - Positive factor: Very high-grade intercept. - Negative factor: Historical data, not new drilling. - Negative factor: Narrow intercept length. Evidence · table > 20.58 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-68) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 31.2 - Grade Unit: g/t - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 23.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 2m at 31.2 g/t Ag, part of a re-evaluated dataset, indicates a moderate silver grade over a narrow width, but the data is historical. - Positive factor: Moderate grade for silver. - Negative factor: Historical data, not new drilling. - Negative factor: Narrow intercept length. Evidence · table > 31.2 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-69) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 23.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 2m at 3 ppm Mo, part of a re-evaluated dataset, indicates a very low molybdenum grade over a narrow width, and the data is historical. - Negative factor: Historical data, not new drilling. - Negative factor: Narrow intercept length. - Negative factor: Grade is very low for molybdenum. Evidence · table > 3 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-70) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 582 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 23.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 2m at 582 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade over a narrow width, and the data is historical. - Negative factor: Historical data, not new drilling. - Negative factor: Narrow intercept length. - Negative factor: Grade is very low for zinc. Evidence · table > 582 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-28 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-71) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-28 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 262 - Grade Unit: ppm - Intercept: 2 m - From: 130 m - To: 132 m - Intercept Depth: 130 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-28:130-132 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 23.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 2m at 262 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade over a narrow width, and the data is historical. - Negative factor: Historical data, not new drilling. - Negative factor: Narrow intercept length. - Negative factor: Grade is very low for lead. Evidence · table > 262 Context: 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-72) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 961 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 161m at 0.54% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 961 Context: PNR-30 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-73) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.33 - Grade Unit: g/t - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 161m at 0.33 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.33 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-74) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.02 - Grade Unit: g/t - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 161m at 2.02 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 2.02 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-75) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 24.2 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 161m at 24.2 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 24.2 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-76) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 925 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 161m at 925 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 925 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-77) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 263 - Grade Unit: ppm - Intercept: 161 m - From: 59 m - To: 220 m - Intercept Depth: 59 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:59-220 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.54 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 161m at 263 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 263 Context: 161 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-78) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1236 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 18m at 1.26% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1236 Context: PNR-30 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-79) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.66 - Grade Unit: g/t - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 18m at 0.66 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.66 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-80) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 10.91 - Grade Unit: g/t - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 18m at 10.91 g/t Ag, part of a re-evaluated dataset, indicates a low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for silver. Evidence · table > 10.91 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-81) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 27.9 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 18m at 27.9 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 27.9 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-82) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 5232 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 18m at 5232 ppm Zn, part of a re-evaluated dataset, indicates a moderate zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for zinc. Evidence · table > 5232 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-30 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-83) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-30 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1618 - Grade Unit: ppm - Intercept: 18 m - From: 110 m - To: 128 m - Intercept Depth: 110 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-30:110-128 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 18m at 1618 ppm Pb, part of a re-evaluated dataset, indicates a moderate lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for lead. Evidence · table > 1618 Context: 18 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-84) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1217 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 188m at 0.46% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1217 Context: PNR-33 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-85) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.27 - Grade Unit: g/t - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 188m at 0.27 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.27 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-86) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.8 - Grade Unit: g/t - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 188m at 0.8 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 0.8 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-87) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 38.7 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 188m at 38.7 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 38.7 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-88) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 155 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 188m at 155 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 155 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-89) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 39 - Grade Unit: ppm - Intercept: 188 m - From: 82 m - To: 270 m - Intercept Depth: 82 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:82-270 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.46 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 188m at 39 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 39 Context: 188 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-90) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2003 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 0.61% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 2003 Context: PNR-33 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-91) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.33 - Grade Unit: g/t - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 0.33 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.33 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-92) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.88 - Grade Unit: g/t - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 0.88 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 0.88 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-93) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 51.1 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 51.1 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 51.1 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-94) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 73 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 73 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 73 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-33 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-95) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-33 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 28 - Grade Unit: ppm - Intercept: 32 m - From: 118 m - To: 150 m - Intercept Depth: 118 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-33:118-150 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.61 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 32m at 28 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 28 Context: 32 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-96) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 872 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 196m at 0.44% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 872 Context: PNR-23 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-97) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.23 - Grade Unit: g/t - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 196m at 0.23 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.23 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-98) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.3 - Grade Unit: g/t - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 196m at 2.3 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 2.3 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-99) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 26.7 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 196m at 26.7 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 26.7 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-100) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1135 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 196m at 1135 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for zinc. Evidence · table > 1135 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-101) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 270 - Grade Unit: ppm - Intercept: 196 m - From: 44 m - To: 240 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:44-240 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 196m at 270 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 270 Context: 196 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-102) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 824 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.11 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 14m at 1.11% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 824 Context: PNR-23 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-103) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.75 - Grade Unit: g/t - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.11 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 14m at 0.75 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.75 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-104) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 6.26 - Grade Unit: g/t - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.11 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 14m at 6.26 g/t Ag, part of a re-evaluated dataset, indicates a low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for silver. Evidence · table > 6.26 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-105) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 18.3 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.11 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 14m at 18.3 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 18.3 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-106) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2237 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.11 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 14m at 2237 ppm Zn, part of a re-evaluated dataset, indicates a low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for zinc. Evidence · table > 2237 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-23 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-107) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-23 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 556 - Grade Unit: ppm - Intercept: 14 m - From: 200 m - To: 214 m - Intercept Depth: 200 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-23:200-214 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.11 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 14m at 556 ppm Pb, part of a re-evaluated dataset, indicates a low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for lead. Evidence · table > 556 Context: 14 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-108) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1170 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 68m at 1.15% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1170 Context: PNR-03 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-109) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.85 - Grade Unit: g/t - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 68m at 0.85 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.85 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-110) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.94 - Grade Unit: g/t - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 68m at 2.94 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 2.94 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-111) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 51.2 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 68m at 51.2 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 51.2 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-112) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 339 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 68m at 339 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 339 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-113) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 353 - Grade Unit: ppm - Intercept: 68 m - From: 32 m - To: 100 m - Intercept Depth: 32 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:32-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.15 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 68m at 353 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 353 Context: 68 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-114) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1213 - Grade Unit: ppm - Intercept: 52 m - From: 34 m - To: 86 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:34-86 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 1.26% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1213 Context: PNR-03 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-115) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.95 - Grade Unit: g/t - Intercept: 52 m - From: 34 m - To: 86 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:34-86 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 0.95 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length with moderate grade. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.95 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-116) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.9 - Grade Unit: g/t - Intercept: 52 m - From: 34 m - To: 86 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:34-86 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 2.9 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 2.9 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-117) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 55.9 - Grade Unit: ppm - Intercept: 52 m - From: 34 m - To: 86 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:34-86 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 55.9 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 55.9 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-118) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 327 - Grade Unit: ppm - Intercept: 52 m - From: 34 m - To: 86 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:34-86 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 327 ppm Zn, part of a re-evaluated dataset, indicates a very low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 327 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-03 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-119) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-03 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 418 - Grade Unit: ppm - Intercept: 52 m - From: 34 m - To: 86 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-03:34-86 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 1.26 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 52m at 418 ppm Pb, part of a re-evaluated dataset, indicates a very low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 418 Context: 52 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-120) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 899 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 194m at 0.4% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 899 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-121) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.19 - Grade Unit: g/t - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 194m at 0.19 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.19 Context: 194 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-122) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.99 - Grade Unit: g/t - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 194m at 1.99 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 1.99 Context: 194 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-123) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 40.6 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 194m at 40.6 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 40.6 Context: 194 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-124) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 971 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 194m at 971 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 971 Context: 194 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-125) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 247 - Grade Unit: ppm - Intercept: 194 m - From: 234 m - To: 428 m - Intercept Depth: 234 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:234-428 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.4 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 194m at 247 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 247 Context: 194 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-126) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1113 - Grade Unit: ppm - Intercept: 16 m - From: 384 m - To: 400 m - Intercept Depth: 384 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:384-400 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.67 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 16m at 0.67% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1113 Context: PNDH-05 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-127) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.28 - Grade Unit: g/t - Intercept: 16 m - From: 384 m - To: 400 m - Intercept Depth: 384 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:384-400 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.67 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 16m at 0.28 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.28 Context: 16 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-128) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 7.54 - Grade Unit: g/t - Intercept: 16 m - From: 384 m - To: 400 m - Intercept Depth: 384 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:384-400 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.67 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 16m at 7.54 g/t Ag, part of a re-evaluated dataset, indicates a low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for silver. Evidence · table > 7.54 Context: 16 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-129) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 20.5 - Grade Unit: ppm - Intercept: 16 m - From: 384 m - To: 400 m - Intercept Depth: 384 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:384-400 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.67 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 16m at 20.5 ppm Mo, part of a re-evaluated dataset, indicates a low molybdenum grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 20.5 Context: 16 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-130) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2988 - Grade Unit: ppm - Intercept: 16 m - From: 384 m - To: 400 m - Intercept Depth: 384 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:384-400 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.67 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 16m at 2988 ppm Zn, part of a re-evaluated dataset, indicates a low zinc grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for zinc. Evidence · table > 2988 Context: 16 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNDH-05 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-131) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNDH-05 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 683 - Grade Unit: ppm - Intercept: 16 m - From: 384 m - To: 400 m - Intercept Depth: 384 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNDH-05:384-400 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.67 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 16m at 683 ppm Pb, part of a re-evaluated dataset, indicates a low lead grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for lead. Evidence · table > 683 Context: 16 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-132) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 803 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 122m at 0.51% CuEq, re-evaluated with a consistent methodology, indicates significant mineralization, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Broad intercept length. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 803 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-133) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.35 - Grade Unit: g/t - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 122m at 0.35 g/t Au, part of a re-evaluated dataset, indicates gold presence over a significant width, but the grade is moderate and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.35 Context: 122 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-134) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.98 - Grade Unit: g/t - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 122m at 0.98 g/t Ag, part of a re-evaluated dataset, indicates silver presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 0.98 Context: 122 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-135) Peñas Negras · molybdenum Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 32 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 122m at 32 ppm Mo, part of a re-evaluated dataset, indicates molybdenum presence over a significant width, but the grade is low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is low for molybdenum. Evidence · table > 32 Context: 122 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-136) Peñas Negras · zinc Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 469 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 122m at 469 ppm Zn, part of a re-evaluated dataset, indicates zinc presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for zinc. Evidence · table > 469 Context: 122 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-137) Peñas Negras · lead Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 90 - Grade Unit: ppm - Intercept: 122 m - From: 34 m - To: 156 m - Intercept Depth: 34 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:34-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.51 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A broad historical intercept of 122m at 90 ppm Pb, part of a re-evaluated dataset, indicates lead presence over a significant width, but the grade is very low and the data is historical. - Positive factor: Broad intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for lead. Evidence · table > 90 Context: 122 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-138) Peñas Negras · copper Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1122 - Grade Unit: ppm - Intercept: 44 m - From: 48 m - To: 92 m - Intercept Depth: 48 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:48-92 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44m at 0.66% CuEq, re-evaluated with a consistent methodology, highlights a significant mineralized section, though the CuEq assumptions and historical nature temper novelty. - Positive factor: Significant intercept length with moderate grade. - Positive factor: Consistent CuEq methodology applied to historical data. - Negative factor: Historical data, not new drilling. - Negative factor: CuEq assumptions include 100% recovery, which may not be realistic. - Negative factor: True width not stated. Evidence · table > 1122 Context: PNR-22 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-139) Peñas Negras · gold Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.45 - Grade Unit: g/t - Intercept: 44 m - From: 48 m - To: 92 m - Intercept Depth: 48 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:48-92 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44m at 0.45 g/t Au, part of a re-evaluated dataset, indicates a moderate gold grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is moderate for gold. Evidence · table > 0.45 Context: 44 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-140) Peñas Negras · silver Historical result Needs review: historical\_restatement #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1.07 - Grade Unit: g/t - Intercept: 44 m - From: 48 m - To: 92 m - Intercept Depth: 48 m #### Classification - Program: exploration - Sample Type: drill - Group ID: PNR-22:48-92 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Interp. Status: scored - Historical: Yes #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: A historical intercept of 44m at 1.07 g/t Ag, part of a re-evaluated dataset, indicates a very low silver grade within a significant width, but the data is historical. - Positive factor: Significant intercept length. - Negative factor: Historical data, not new drilling. - Negative factor: Grade is very low for silver. Evidence · table > 1.07 Context: 44 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Stale Data Re-release** Polarity: negative Definition: Historical results re-announced with no new assays or reinterpretation — low genuine novelty. Why it applies: the fact restates a prior release ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-141) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 43.2 - Grade Unit: ppm - Intercept: 44 m - From: 48 m - To: 92 m - Intercept Depth: 48 m #### Classification - Sample Type: drill - Group ID: PNR-22:48-92 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 43.2 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 43.2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-142) Peñas Negras · zinc #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 543 - Grade Unit: ppm - Intercept: 44 m - From: 48 m - To: 92 m - Intercept Depth: 48 m #### Classification - Sample Type: drill - Group ID: PNR-22:48-92 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 543 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 543 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-22 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-143) Peñas Negras · lead #### Identity - Hole ID: PNR-22 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 93 - Grade Unit: ppm - Intercept: 44 m - From: 48 m - To: 92 m - Intercept Depth: 48 m #### Classification - Sample Type: drill - Group ID: PNR-22:48-92 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.66 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 93 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 93 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-144) Peñas Negras · gold #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.2 - Grade Unit: g/t - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.2 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 29.6 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.2 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-145) Peñas Negras · silver #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.39 - Grade Unit: g/t - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.39 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 353.7 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.39 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-146) Peñas Negras · copper #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 394 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 394 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 394 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-147) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 9.3 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 9.3 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 9.3 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-148) Peñas Negras · zinc #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1496 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1496 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1496 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-149) Peñas Negras · lead #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 325 - Grade Unit: ppm - Intercept: 148 m - From: 8 m - To: 156 m - Intercept Depth: 8 m #### Classification - Sample Type: drill - Group ID: PNR-36:8-156 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 325 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 325 Context: PNR-36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-150) Peñas Negras · gold #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.33 - Grade Unit: g/t - Intercept: 2 m - From: 108 m - To: 110 m - Intercept Depth: 108 m #### Classification - Sample Type: drill - Group ID: PNR-36:108-110 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.33 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 0.7 g/t·m is below \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.33 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-151) Peñas Negras · silver #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 50.4 - Grade Unit: g/t - Intercept: 2 m - From: 108 m - To: 110 m - Intercept Depth: 108 m #### Classification - Sample Type: drill - Group ID: PNR-36:108-110 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 50.4 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 100.8 g/t·m is below \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 50.4 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-152) Peñas Negras · copper #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 6027 - Grade Unit: ppm - Intercept: 2 m - From: 108 m - To: 110 m - Intercept Depth: 108 m #### Classification - Sample Type: drill - Group ID: PNR-36:108-110 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 6027 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 6027 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-153) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 26 - Grade Unit: ppm - Intercept: 2 m - From: 108 m - To: 110 m - Intercept Depth: 108 m #### Classification - Sample Type: drill - Group ID: PNR-36:108-110 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 26 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 26 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-154) Peñas Negras · zinc #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 10000 - Grade Unit: ppm - Intercept: 2 m - From: 108 m - To: 110 m - Intercept Depth: 108 m #### Classification - Sample Type: drill - Group ID: PNR-36:108-110 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 10000 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 10000 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-36 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-155) Peñas Negras · lead #### Identity - Hole ID: PNR-36 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3052 - Grade Unit: ppm - Intercept: 2 m - From: 108 m - To: 110 m - Intercept Depth: 108 m #### Classification - Sample Type: drill - Group ID: PNR-36:108-110 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 3052 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 3052 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-156) Peñas Negras · gold #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.35 - Grade Unit: g/t - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.35 g/t gold is moderate against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 35.0 g/t·m is moderate \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.35 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-157) Peñas Negras · silver #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.69 - Grade Unit: g/t - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.69 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 269.0 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.69 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-158) Peñas Negras · copper #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 319 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 319 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 319 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-159) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 9.1 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 9.1 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 9.1 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-160) Peñas Negras · zinc #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 553 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 553 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 553 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-161) Peñas Negras · lead #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 150 - Grade Unit: ppm - Intercept: 100 m - From: 2 m - To: 102 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-102 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.49 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 150 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 150 Context: PNR-39 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-162) Peñas Negras · gold #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.67 - Grade Unit: g/t - Intercept: 14 m - From: 2 m - To: 16 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-16 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.92 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.67 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 9.4 g/t·m is below \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.67 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-163) Peñas Negras · silver #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 8.13 - Grade Unit: g/t - Intercept: 14 m - From: 2 m - To: 16 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-16 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.92 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 8.13 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 113.8 g/t·m is below. - Negative factor: 8.13 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 8.13 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-164) Peñas Negras · copper #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 131 - Grade Unit: ppm - Intercept: 14 m - From: 2 m - To: 16 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-16 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.92 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 131 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 131 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-165) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 4.9 - Grade Unit: ppm - Intercept: 14 m - From: 2 m - To: 16 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-16 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.92 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 4.9 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 4.9 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-166) Peñas Negras · zinc #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 30 - Grade Unit: ppm - Intercept: 14 m - From: 2 m - To: 16 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-16 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.92 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 30 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 30 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-39 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-167) Peñas Negras · lead #### Identity - Hole ID: PNR-39 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 432 - Grade Unit: ppm - Intercept: 14 m - From: 2 m - To: 16 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNR-39:2-16 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.92 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 432 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 432 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-168) Peñas Negras · gold #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.17 - Grade Unit: g/t - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.17 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 25.5 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.17 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-169) Peñas Negras · silver #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.42 - Grade Unit: g/t - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.42 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 63.0 g/t·m is below. - Negative factor: 0.42 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.42 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-170) Peñas Negras · copper #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 511 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 511 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 511 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-171) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 13.2 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 13.2 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 13.2 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-172) Peñas Negras · zinc #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 443 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 443 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 443 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-173) Peñas Negras · lead #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 57 - Grade Unit: ppm - Intercept: 150 m - From: 58 m - To: 208 m - Intercept Depth: 58 m #### Classification - Sample Type: drill - Group ID: PNR-29:58-208 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.27 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 57 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 57 Context: PNR-29 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-174) Peñas Negras · gold #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.57 - Grade Unit: g/t - Intercept: 2 m - From: 98 m - To: 100 m - Intercept Depth: 98 m #### Classification - Sample Type: drill - Group ID: PNR-29:98-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.8 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.57 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 1.1 g/t·m is below \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.57 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-175) Peñas Negras · silver #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2 - Grade Unit: g/t - Intercept: 2 m - From: 98 m - To: 100 m - Intercept Depth: 98 m #### Classification - Sample Type: drill - Group ID: PNR-29:98-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.8 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 4.0 g/t·m is below. - Negative factor: 2 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-176) Peñas Negras · copper #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 937 - Grade Unit: ppm - Intercept: 2 m - From: 98 m - To: 100 m - Intercept Depth: 98 m #### Classification - Sample Type: drill - Group ID: PNR-29:98-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.8 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 937 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 937 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-177) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 19 - Grade Unit: ppm - Intercept: 2 m - From: 98 m - To: 100 m - Intercept Depth: 98 m #### Classification - Sample Type: drill - Group ID: PNR-29:98-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.8 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 19 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 19 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-178) Peñas Negras · zinc #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1075 - Grade Unit: ppm - Intercept: 2 m - From: 98 m - To: 100 m - Intercept Depth: 98 m #### Classification - Sample Type: drill - Group ID: PNR-29:98-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.8 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1075 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1075 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-29 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-179) Peñas Negras · lead #### Identity - Hole ID: PNR-29 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 365 - Grade Unit: ppm - Intercept: 2 m - From: 98 m - To: 100 m - Intercept Depth: 98 m #### Classification - Sample Type: drill - Group ID: PNR-29:98-100 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.8 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 365 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 365 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-180) Peñas Negras · gold #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.08 - Grade Unit: g/t - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.08 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 15.5 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.08 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-181) Peñas Negras · silver #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.53 - Grade Unit: g/t - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.53 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 102.8 g/t·m is below. - Negative factor: 0.53 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.53 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-182) Peñas Negras · copper #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 897 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 897 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 897 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-183) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 17.7 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 17.7 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 17.7 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-184) Peñas Negras · zinc #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 172 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 172 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 172 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-185) Peñas Negras · lead #### Identity - Hole ID: PNDH-01 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 18 - Grade Unit: ppm - Intercept: 194 m - From: 84 m - To: 278 m - Intercept Depth: 84 m #### Classification - Sample Type: drill - Group ID: PNDH-01:84-278 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.2 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 18 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 18 Context: PNDH-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-186) Peñas Negras · gold #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.27 - Grade Unit: g/t - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.27 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 22.1 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.27 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-187) Peñas Negras · silver #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.56 - Grade Unit: g/t - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.56 g/t silver is weak against the default band \[500, 200, 100, 30\] g/t. Grade×width 209.9 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.56 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-188) Peñas Negras · copper #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 365 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 365 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 365 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-189) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 11.9 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 11.9 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 11.9 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-190) Peñas Negras · zinc #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 758 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 758 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 758 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-08 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-191) Peñas Negras · lead #### Identity - Hole ID: PNDH-08 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 254 - Grade Unit: ppm - Intercept: 82 m - From: 2 m - To: 84 m - Intercept Depth: 2 m #### Classification - Sample Type: drill - Group ID: PNDH-08:2-84 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.42 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 254 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 254 Context: PNDH-08 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-192) Peñas Negras · gold #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.24 - Grade Unit: g/t - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.24 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 22.6 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.24 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-193) Peñas Negras · silver #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.64 - Grade Unit: g/t - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.64 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 60.2 g/t·m is below. - Negative factor: 0.64 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.64 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-194) Peñas Negras · copper #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 313 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 313 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 313 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-195) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 12.6 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 12.6 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 12.6 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-196) Peñas Negras · zinc #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1000 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1000 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1000 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-61 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-197) Peñas Negras · lead #### Identity - Hole ID: PNR-61 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 100 - Grade Unit: ppm - Intercept: 94 m - From: 260 m - To: 354 m - Intercept Depth: 260 m #### Classification - Sample Type: drill - Group ID: PNR-61:260-354 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 100 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 100 Context: PNR-61 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-198) Peñas Negras · gold #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.18 - Grade Unit: g/t - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.18 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 15.1 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.18 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-199) Peñas Negras · silver #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 2.34 - Grade Unit: g/t - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 2.34 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 196.6 g/t·m is below. - Negative factor: 2.34 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 2.34 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-200) Peñas Negras · copper #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 307 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 307 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 307 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-201) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 13 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 13 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 13 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-202) Peñas Negras · zinc #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1131 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1131 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 1131 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-203) Peñas Negras · lead #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 346 - Grade Unit: ppm - Intercept: 84 m - From: 24 m - To: 108 m - Intercept Depth: 24 m #### Classification - Sample Type: drill - Group ID: PNR-21:24-108 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 346 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 346 Context: PNR-21 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-204) Peñas Negras · gold #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.36 - Grade Unit: g/t - Intercept: 12 m - From: 44 m - To: 56 m - Intercept Depth: 44 m #### Classification - Sample Type: drill - Group ID: PNR-21:44-56 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.73 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.36 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 4.3 g/t·m is below \(grade alone is weak; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.36 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-205) Peñas Negras · silver #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 7.82 - Grade Unit: g/t - Intercept: 12 m - From: 44 m - To: 56 m - Intercept Depth: 44 m #### Classification - Sample Type: drill - Group ID: PNR-21:44-56 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.73 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 7.82 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 93.8 g/t·m is below. - Negative factor: 7.82 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 7.82 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-206) Peñas Negras · copper #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 722 - Grade Unit: ppm - Intercept: 12 m - From: 44 m - To: 56 m - Intercept Depth: 44 m #### Classification - Sample Type: drill - Group ID: PNR-21:44-56 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.73 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 722 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 722 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-207) Peñas Negras · molybdenum #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 8.8 - Grade Unit: ppm - Intercept: 12 m - From: 44 m - To: 56 m - Intercept Depth: 44 m #### Classification - Sample Type: drill - Group ID: PNR-21:44-56 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.73 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 8.8 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 8.8 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-208) Peñas Negras · zinc #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 3102 - Grade Unit: ppm - Intercept: 12 m - From: 44 m - To: 56 m - Intercept Depth: 44 m #### Classification - Sample Type: drill - Group ID: PNR-21:44-56 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.73 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 3102 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 3102 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNR-21 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-209) Peñas Negras · lead #### Identity - Hole ID: PNR-21 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 1073 - Grade Unit: ppm - Intercept: 12 m - From: 44 m - To: 56 m - Intercept Depth: 44 m #### Classification - Sample Type: drill - Group ID: PNR-21:44-56 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.73 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 1073 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 1073 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-210) Peñas Negras · gold #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.4 - Grade Unit: g/t - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.4 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 18.5 g/t·m is weak. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.4 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-211) Peñas Negras · silver #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.48 - Grade Unit: g/t - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.48 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 22.2 g/t·m is below. - Negative factor: 0.48 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.48 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-212) Peñas Negras · copper #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 298 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 298 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 298 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-213) Peñas Negras · molybdenum #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 18.3 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 18.3 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 18.3 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-214) Peñas Negras · zinc #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 187 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 187 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 187 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PND-01 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-215) Peñas Negras · lead #### Identity - Hole ID: PND-01 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 76 - Grade Unit: ppm - Intercept: 46.2 m - From: 149.4 m - To: 195.6 m - Intercept Depth: 149.4 m #### Classification - Sample Type: drill - Group ID: PND-01:149.4-195.6 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.5 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 76 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 76 Context: PND-01 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-216) Peñas Negras · gold #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: gold - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.19 - Grade Unit: g/t - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.19 g/t gold is weak against the default band \[5, 2, 1, 0.3\] g/t. Grade×width 14.4 g/t·m is weak \(grade alone is below; the better of the two is used\). - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.19 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-217) Peñas Negras · silver #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: silver - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 0.36 - Grade Unit: g/t - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table. 0.36 g/t silver is below against the default band \[500, 200, 100, 30\] g/t. Grade×width 27.4 g/t·m is below. - Negative factor: 0.36 g/t silver is below the weak threshold \(30 g/t\) on the default band. - Negative factor: Scored from rubric bands during table expansion, not from document context. Evidence · table > 0.36 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-218) Peñas Negras · copper #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: copper - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 553 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 553 ppm copper, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the copper rubric unit %; not scored. Evidence · table > 553 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-219) Peñas Negras · molybdenum #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: molybdenum - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 26.2 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 26.2 ppm molybdenum. No grade band defined for this commodity, so the score is a placeholder. - Negative factor: No grade rubric for molybdenum; intercept not scored. Evidence · table > 26.2 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-220) Peñas Negras · zinc #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: zinc - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 192 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 192 ppm zinc, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the zinc rubric unit %; not scored. Evidence · table > 192 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### PNDH-02 [Link to this fact](https://atlas-extractions.minestarters.com/news/sendero-resources-rebuilds-pen-as-negras-drill-assay-database-applying-consisten--c53e4b43-7d8b-4639-8b4c-a227ee068e56#fact-drill-facts-221) Peñas Negras · lead #### Identity - Hole ID: PNDH-02 - Project: Peñas Negras - Commodity: lead - Region: argentina - Reported Region: argentina - Ticker: SEND #### Geometry - Grade: 34 - Grade Unit: ppm - Intercept: 76 m - From: 0 m - To: 76 m - Intercept Depth: 0 m #### Classification - Sample Type: drill - Group ID: PNDH-02:0-76 - Mining Method: unknown #### QA/QC - QP Signed: Yes #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-23T00:00:00.000Z Reasoning: Expanded from assay table: 34 ppm lead, reported in a unit the rubric does not cover \(%\). - Negative factor: Grade unit ppm does not match the lead rubric unit %; not scored. Evidence · table > 34 Context: PNDH-02 #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.