# Minsud reports significant mineral resources growth at Chita Valley Deposits Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff Original source: https://money.tmx.com/en/quote/MSR/news/4623956497782096/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits Publisher: tmx Original announcement: 2026-02-27T15:28:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Minsud Resources Corp. - Ticker: MSR - Exchange: TSX - Region: San Juan Province, Argentina - Primary commodity: Copper - Secondary commodities: Silver, Gold, Molybdenum, Zinc - Document categories: Resource update - Extracted: 2026-09-18 11:06:02 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Minsud Resources Corp. announced a significant update to its Mineral Resource Estimates for the Chita Valley Project in San Juan Province, Argentina, effective February 20, 2026. The consolidated estimate shows 1,033 kt of copper equivalent in Indicated Resources and 3,333 kt in Inferred Resources, representing substantial growth for both categories. The polymetallic deposits, including Chinchillones and Chita South Porphyry, are considered suitable for open-pit mining and flotation processing, with the estimate prepared under NI 43-101 standards by Qualified Persons. Reasoning: Minsud reported a substantial increase in both Indicated and Inferred Mineral Resources for its Chita Valley Project, highlighting its potential as a district-scale polymetallic copper asset, with the estimate prepared under NI 43-101 standards and detailed technical parameters. - Positive factor: Significant resource growth - Positive factor: District-scale potential - Positive factor: Polymetallic credits - Positive factor: NI 43-101 compliant - Positive factor: QP signed - Positive factor: Detailed cut-off disclosure - Positive factor: Metal equivalent assumptions disclosed - Positive factor: Open-pit mining potential - Negative factor: Significant inferred component Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 116 ## Classification and evidence **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document reports an updated Mineral Resource Estimate for the Chita Valley Project. Evidence · text > Minsud reports significant mineral resources growth at Chita Valley Deposits **QP/CP Signed** Polarity: positive 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: The Mineral Resource Estimate was prepared by Mr. Michael Job, Principal Geology and Geostatistics, a full-time employee of Cube Consulting Pty Ltd, in collaboration with GeoEstima SpA. As a Qualified Person \(QP\) under NI 43-101 standards, Mr. Job oversaw all aspects of the Mineral Resource Estimation. Evidence · text > The updated Mineral Resource Estimate was prepared by Mr. Michael Job, Principal Geology and Geostatistics, a full-time employee of Cube Consulting Pty Ltd, in collaboration with GeoEstima SpA. As a Qualified Person \(QP\) under NI 43-101 standards, Mr. Job oversaw all aspects of the Mineral Resource Estimation. **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The full technical report, prepared by Cube in compliance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects \("NI-43-101"\), will be filed on SEDAR+. Evidence · text > The full technical report, prepared by Cube in compliance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects \("NI-43-101"\), will be filed on SEDAR+ \( www.sedarplus.ca \) under the Company's issuer profile within 45 days of this news release. **Contained Metal Growth** Polarity: positive Definition: True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes. Why it applies: Indicated Resources show a 30.7% increase in CuEq and Inferred Resources show a 37.8% increase in CuEq. Evidence · text > Indicated Resources: 30.7 % increase; 1,014 kt CuEq... Inferred Resources: 37.8% increase; 2,823 kt CuEq **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: A significant portion of the total resource is classified as Inferred, with 3,333 kt of copper equivalent in the Inferred category. Evidence · text > Inferred Resources: 3,333 kt of copper equivalent **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: The economic grades of the Mineral Resource Estimate \(MRE\) have been reported above Net Smelter Return \(NSR\) cut-offs that vary by deposit and domain. Evidence · text > The economic grades of the Mineral Resource Estimate \(MRE\) have been reported above Net Smelter Return \(NSR\) cut-offs that vary by deposit and domain. These NSR cut-offs are: Chinchillones low zinc geological domain - US$10.00/tonne Chinchillones high zinc geological domain - US$11.65/tonne PSU secondary enriched domain – US$7.10/tonne ## Extracted facts Stored fact records: 116. Some facts used in scoring do not have a stored record. ## Resource Estimates (116) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-0) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.37 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated resource for the Low Zinc domain of Chinchillones with a good copper equivalent grade, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 0.37 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-1) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Grade: 0.24 - Grade Unit: % - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated copper resource for the Low Zinc domain of Chinchillones, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 0.24 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-2) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Grade: 8.1 - Grade Unit: g/t - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated silver resource for the Low Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 8.1 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-3) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Grade: 0.1 - Grade Unit: g/t - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated gold resource for the Low Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.10 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-4) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Grade: 45.1 - Grade Unit: ppm - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated molybdenum resource for the Low Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 45.1 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-5) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Grade: 0 - Grade Unit: % - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated zinc resource for the Low Zinc domain of Chinchillones, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for zinc in this domain Evidence · table > 0.0 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-6) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.32 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred resource for the Low Zinc domain of Chinchillones with a good copper equivalent grade, but with lower confidence due to its inferred classification. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 0.32 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-7) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Grade: 0.19 - Grade Unit: % - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred copper resource for the Low Zinc domain of Chinchillones, but with lower confidence due to its inferred classification. - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 0.19 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-8) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Grade: 6.8 - Grade Unit: g/t - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred silver resource for the Low Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 6.8 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-9) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Grade: 0.08 - Grade Unit: g/t - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred gold resource for the Low Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.08 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-10) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Grade: 96.1 - Grade Unit: ppm - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred molybdenum resource for the Low Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 96.1 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-11) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Grade: 0 - Grade Unit: % - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred zinc resource for the Low Zinc domain of Chinchillones, with a zero grade as expected for this domain and lower confidence due to inferred classification. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for zinc in this domain Evidence · table > 0.0 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-12) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.63 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated resource for the High Zinc domain of Chinchillones with a good copper equivalent grade, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 0.63 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-13) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Grade: 0.17 - Grade Unit: % - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated copper resource for the High Zinc domain of Chinchillones, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 0.17 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-14) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Grade: 15.1 - Grade Unit: g/t - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated silver resource for the High Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 15.1 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-15) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Grade: 0.11 - Grade Unit: g/t - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated gold resource for the High Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.11 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-16) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Grade: 0 - Grade Unit: ppm - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated molybdenum resource for the High Zinc domain of Chinchillones, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for molybdenum in this domain Evidence · table > 0.0 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-17) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Grade: 0.67 - Grade Unit: % - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated zinc resource for the High Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.67 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-18) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.64 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred resource for the High Zinc domain of Chinchillones with a good copper equivalent grade, but with lower confidence due to its inferred classification. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 0.64 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-19) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Grade: 0.19 - Grade Unit: % - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred copper resource for the High Zinc domain of Chinchillones, but with lower confidence due to its inferred classification. - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 0.19 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-20) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Grade: 14.5 - Grade Unit: g/t - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred silver resource for the High Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 14.5 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-21) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Grade: 0.09 - Grade Unit: g/t - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred gold resource for the High Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.09 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-22) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Grade: 0 - Grade Unit: ppm - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred molybdenum resource for the High Zinc domain of Chinchillones, with a zero grade as expected for this domain and lower confidence due to inferred classification. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for molybdenum in this domain Evidence · table > 0.0 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-23) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Grade: 0.71 - Grade Unit: % - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred zinc resource for the High Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.71 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-24) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.44 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated resource for Chinchillones with a strong copper equivalent grade, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 0.44 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-25) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Grade: 0.22 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated copper resource for Chinchillones, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 0.22 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-26) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Grade: 10.1 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated silver resource for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 10.1 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-27) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Grade: 0.1 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated gold resource for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.10 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-28) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Grade: 34.3 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated molybdenum resource for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 34.3 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-29) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Grade: 0.16 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated zinc resource for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.16 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-30) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.36 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred resource for Chinchillones with a good copper equivalent grade, representing significant contained metal but with lower confidence. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 0.36 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-31) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Grade: 0.19 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred copper resource for Chinchillones, representing significant contained metal but with lower confidence. - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 0.19 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-32) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Grade: 8.1 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred silver resource for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 8.1 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-33) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Grade: 0.08 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred gold resource for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.08 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-34) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Grade: 83.7 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred molybdenum resource for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 83.7 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-35) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Grade: 0.09 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred zinc resource for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.09 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-36) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Contained Metal: 662 - Contained Unit: kt cueq - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained copper equivalent metal for the Low Zinc domain of Chinchillones, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 662 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-37) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Contained Metal: 428 - Contained Unit: kt - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained copper metal for the Low Zinc domain of Chinchillones, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 428 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-38) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Contained Metal: 46 - Contained Unit: m oz - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained silver metal for the Low Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 46.0 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-39) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Contained Metal: 562 - Contained Unit: k oz - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained gold metal for the Low Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 562 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-40) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Contained Metal: 8 - Contained Unit: kt - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained molybdenum metal for the Low Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 8.0 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-41) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e505c675da0fb28da1f8 - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 177000000 - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained zinc metal for the Low Zinc domain of Chinchillones, with a zero value as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero contained metal for zinc in this domain Evidence · table > 0.0 Context: 177 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-42) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Contained Metal: 2176 - Contained Unit: kt cueq - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained copper equivalent metal for the Low Zinc domain of Chinchillones, but with lower confidence due to its inferred classification. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 2,176 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-43) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Contained Metal: 1321 - Contained Unit: kt - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained copper metal for the Low Zinc domain of Chinchillones, but with lower confidence due to its inferred classification. - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 1,321 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-44) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Contained Metal: 148.8 - Contained Unit: m oz - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained silver metal for the Low Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 148.8 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-45) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Contained Metal: 1768 - Contained Unit: k oz - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained gold metal for the Low Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 1,768 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-46) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Contained Metal: 65.4 - Contained Unit: kt - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained molybdenum metal for the Low Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 65.4 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-47) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:8224bbc801306a53d2cc - Deposit or zone: Low Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 681000000 - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 10 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained zinc metal for the Low Zinc domain of Chinchillones, with a zero value as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero contained metal for zinc in this domain Evidence · table > 0.0 Context: 681 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-48) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Contained Metal: 352 - Contained Unit: kt cueq - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained copper equivalent metal for the High Zinc domain of Chinchillones, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 352 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-49) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Contained Metal: 93 - Contained Unit: kt - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained copper metal for the High Zinc domain of Chinchillones, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 93 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-50) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Contained Metal: 27.3 - Contained Unit: m oz - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained silver metal for the High Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 27.3 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-51) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Contained Metal: 192 - Contained Unit: k oz - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained gold metal for the High Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 192 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-52) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained molybdenum metal for the High Zinc domain of Chinchillones, with a zero value as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero contained metal for molybdenum in this domain Evidence · table > 0.0 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-53) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:86542aa5a351df9629ec - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 56000000 - Contained Metal: 375 - Contained Unit: kt - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated contained zinc metal for the High Zinc domain of Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 375 Context: 56 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-54) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Contained Metal: 647 - Contained Unit: kt cueq - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained copper equivalent metal for the High Zinc domain of Chinchillones, but with lower confidence due to its inferred classification. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 647 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-55) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Contained Metal: 193 - Contained Unit: kt - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained copper metal for the High Zinc domain of Chinchillones, but with lower confidence due to its inferred classification. - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 193 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-56) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Contained Metal: 47 - Contained Unit: m oz - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained silver metal for the High Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 47.0 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-57) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Contained Metal: 283 - Contained Unit: k oz - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained gold metal for the High Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 283 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-58) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Contained Metal: 0 - Contained Unit: kt - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained molybdenum metal for the High Zinc domain of Chinchillones, with a zero value as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero contained metal for molybdenum in this domain Evidence · table > 0.0 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-59) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:3bb5ecf4d601ae8063d1 - Deposit or zone: High Zinc - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 101000000 - Contained Metal: 719 - Contained Unit: kt - Cutoff Grade: 11.65 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred contained zinc metal for the High Zinc domain of Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 719 Context: 101 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-60) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Contained Metal: 1014 - Contained Unit: kt cueq #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained copper equivalent metal for Chinchillones, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 1,014 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-61) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Contained Metal: 521 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained copper metal for Chinchillones, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 521 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-62) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Contained Metal: 73.2 - Contained Unit: m oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained silver metal for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 73.2 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-63) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Contained Metal: 754 - Contained Unit: k oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained gold metal for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 754 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-64) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Contained Metal: 8 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained molybdenum metal for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 8.0 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-65) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:54917ab9bd19ab6f269b - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 233000000 - Contained Metal: 375 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained zinc metal for Chinchillones, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 375 Context: 233 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-66) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Contained Metal: 2823 - Contained Unit: kt cueq #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained copper equivalent metal for Chinchillones, representing significant contained metal but with lower confidence. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 2,823 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-67) Chinchillones · copper #### Identity - Project: Chinchillones - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Contained Metal: 1514 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained copper metal for Chinchillones, representing significant contained metal but with lower confidence. - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 1,514 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-68) Chinchillones · silver #### Identity - Project: Chinchillones - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Contained Metal: 195.8 - Contained Unit: m oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained silver metal for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 195.8 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-69) Chinchillones · gold #### Identity - Project: Chinchillones - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Contained Metal: 2051 - Contained Unit: k oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained gold metal for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 2,051 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-70) Chinchillones · molybdenum #### Identity - Project: Chinchillones - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:ac9782a403d97e53370c - Deposit or zone: Chinchillones Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Contained Metal: 65.4 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained molybdenum metal for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 65.4 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-71) Chinchillones · zinc #### Identity - Project: Chinchillones - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:6d4ceb5efb11265eb43a - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 782000000 - Contained Metal: 719 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained zinc metal for Chinchillones, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 719 Context: 782 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-72) Chita South Porphyry \(PSU\) · copper #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4e25fd52fb466e1a4dfd - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Contained Metal: 19 - Contained Unit: kt cueq - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated resource for the Enriched domain of Chita South Porphyry with a good copper equivalent grade, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 19 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-73) Chita South Porphyry \(PSU\) · silver #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4e25fd52fb466e1a4dfd - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated silver resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for silver in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-74) Chita South Porphyry \(PSU\) · gold #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4e25fd52fb466e1a4dfd - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated gold resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for gold in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-75) Chita South Porphyry \(PSU\) · molybdenum #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4e25fd52fb466e1a4dfd - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: ppm - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated molybdenum resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for molybdenum in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-76) Chita South Porphyry \(PSU\) · zinc #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4e25fd52fb466e1a4dfd - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: % - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Indicated zinc resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for zinc in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-77) Chita South Porphyry \(PSU\) · copper #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:29bdd30c6b2ec023556a - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Contained Metal: 510 - Contained Unit: kt cueq - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred resource for the Enriched domain of Chita South Porphyry with a good copper equivalent grade, but with lower confidence due to its inferred classification. - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 510 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-78) Chita South Porphyry \(PSU\) · silver #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:29bdd30c6b2ec023556a - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred silver resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for silver in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-79) Chita South Porphyry \(PSU\) · gold #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:29bdd30c6b2ec023556a - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred gold resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for gold in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-80) Chita South Porphyry \(PSU\) · molybdenum #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:29bdd30c6b2ec023556a - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: ppm - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred molybdenum resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for molybdenum in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-81) Chita South Porphyry \(PSU\) · zinc #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:29bdd30c6b2ec023556a - Deposit or zone: Enriched - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: % - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Inferred zinc resource for the Enriched domain of Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for zinc in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-82) Chita South Porphyry \(PSU\) · copper #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:863b961a7ed8d31ec859 - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Contained Metal: 19 - Contained Unit: kt cueq - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.3 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated resource for Chita South Porphyry with a good copper equivalent grade, supporting open-pit mining. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure Evidence · table > 19 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-83) Chita South Porphyry \(PSU\) · silver #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:863b961a7ed8d31ec859 - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated silver resource for Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for silver in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-84) Chita South Porphyry \(PSU\) · gold #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:863b961a7ed8d31ec859 - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated gold resource for Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for gold in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-85) Chita South Porphyry \(PSU\) · molybdenum #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:863b961a7ed8d31ec859 - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: ppm - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated molybdenum resource for Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for molybdenum in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-86) Chita South Porphyry \(PSU\) · zinc #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:863b961a7ed8d31ec859 - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 7000000 - Grade: 0 - Grade Unit: % - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated zinc resource for Chita South Porphyry, with a zero grade as expected for this domain. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Negative factor: Zero grade for zinc in this domain Evidence · table > 0.0 Context: 7 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-87) Chita South Porphyry \(PSU\) · copper #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e6898b80c49a3b6a22ba - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Contained Metal: 510 - Contained Unit: kt cueq - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.29 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred resource for Chita South Porphyry with a good copper equivalent grade, but with lower confidence due to its inferred classification. - Positive factor: Open-pit mining potential - Positive factor: Detailed cut-off disclosure - Negative factor: Inferred resource Evidence · table > 510 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-88) Chita South Porphyry \(PSU\) · silver #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e6898b80c49a3b6a22ba - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred silver resource for Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for silver in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-89) Chita South Porphyry \(PSU\) · gold #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e6898b80c49a3b6a22ba - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: g/t - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred gold resource for Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for gold in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-90) Chita South Porphyry \(PSU\) · molybdenum #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e6898b80c49a3b6a22ba - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: ppm - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred molybdenum resource for Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for molybdenum in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-91) Chita South Porphyry \(PSU\) · zinc #### Identity - Project: Chita South Porphyry \(PSU\) - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:e6898b80c49a3b6a22ba - Deposit or zone: Chita South Porphyry \(PSU\) Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 174000000 - Grade: 0 - Grade Unit: % - Cutoff Grade: 7.1 - Cutoff Unit: US$/tonne #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred zinc resource for Chita South Porphyry, with a zero grade as expected for this domain and lower confidence. - Positive factor: Open-pit mining potential - Negative factor: Inferred resource - Negative factor: Zero grade for zinc in this domain Evidence · table > 0.0 Context: 174 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-92) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.43 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated resource for Chita Valley with a strong copper equivalent grade, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 0.43 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-93) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Grade: 0.23 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated copper resource for Chita Valley, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 0.23 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-94) Chita Valley · silver #### Identity - Project: Chita Valley - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Grade: 9.8 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated silver resource for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 9.8 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-95) Chita Valley · gold #### Identity - Project: Chita Valley - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Grade: 0.1 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated gold resource for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.1 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-96) Chita Valley · molybdenum #### Identity - Project: Chita Valley - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Grade: 33.3 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated molybdenum resource for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 33.3 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-97) Chita Valley · zinc #### Identity - Project: Chita Valley - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Grade: 0.16 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated zinc resource for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 0.16 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-98) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Metal Eq. Grade: 0.35 - Metal Eq. Unit: % CuEq - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred resource for Chita Valley with a good copper equivalent grade, representing significant contained metal but with lower confidence. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 0.35 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-99) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Grade: 0.21 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred copper resource for Chita Valley, representing significant contained metal but with lower confidence. - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 0.21 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-100) Chita Valley · silver #### Identity - Project: Chita Valley - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Grade: 6.6 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred silver resource for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 6.6 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-101) Chita Valley · gold #### Identity - Project: Chita Valley - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Grade: 0.07 - Grade Unit: g/t #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred gold resource for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.07 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-102) Chita Valley · molybdenum #### Identity - Project: Chita Valley - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Grade: 68.4 - Grade Unit: ppm #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred molybdenum resource for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 68.4 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-103) Chita Valley · zinc #### Identity - Project: Chita Valley - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Grade: 0.08 - Grade Unit: % #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred zinc resource for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 0.08 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No Contained Metal** Polarity: negative Definition: Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. Why it applies: contained\_metal was not reported ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-104) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Contained Metal: 1033 - Contained Unit: kt cueq #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained copper equivalent metal for Chita Valley, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 1,033 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-105) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Contained Metal: 540 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained copper metal for Chita Valley, representing significant contained metal. - Positive factor: Indicated resource - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal Evidence · table > 540 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-106) Chita Valley · silver #### Identity - Project: Chita Valley - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Contained Metal: 73.2 - Contained Unit: m oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained silver metal for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 73.2 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-107) Chita Valley · gold #### Identity - Project: Chita Valley - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Contained Metal: 754 - Contained Unit: k oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained gold metal for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 754 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-108) Chita Valley · molybdenum #### Identity - Project: Chita Valley - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Contained Metal: 8 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained molybdenum metal for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 8 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-109) Chita Valley · zinc #### Identity - Project: Chita Valley - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:b95a5badaca1a8e9f4c0 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: indicated - Tonnes: 240000000 - Contained Metal: 375 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Indicated contained zinc metal for Chita Valley, contributing to polymetallic credits. - Positive factor: Indicated resource - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential Evidence · table > 375 Context: 240 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-110) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Contained Metal: 3333 - Contained Unit: kt cueq #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained copper equivalent metal for Chita Valley, representing significant contained metal but with lower confidence. - Positive factor: Polymetallic credits - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 3,333 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-111) Chita Valley · copper #### Identity - Project: Chita Valley - Commodity: copper - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Contained Metal: 2024 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained copper metal for Chita Valley, representing significant contained metal but with lower confidence. - Positive factor: Open-pit mining potential - Positive factor: Significant contained metal - Negative factor: Inferred resource Evidence · table > 2,024 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-112) Chita Valley · silver #### Identity - Project: Chita Valley - Commodity: silver - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Contained Metal: 195.8 - Contained Unit: m oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained silver metal for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 195.8 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-113) Chita Valley · gold #### Identity - Project: Chita Valley - Commodity: gold - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Contained Metal: 2051 - Contained Unit: k oz #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained gold metal for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 2,051 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-114) Chita Valley · molybdenum #### Identity - Project: Chita Valley - Commodity: molybdenum - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Contained Metal: 65.4 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained molybdenum metal for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 65.4 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/minsud-reports-significant-mineral-resources-growth-at-chita-valley-deposits--664a1ac1-6a28-45a4-a709-0af4ebd57eff#fact-resource-facts-115) Chita Valley · zinc #### Identity - Project: Chita Valley - Commodity: zinc - Region: argentina - Reported Region: San Juan Province, Argentina - Ticker: MSR #### Resource scope - Estimate type: resource - Effective date: 2026-02-20T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Michael Job, Orlando Rojas, Renato Bobis - Resource group id: resource:4732936835a6d1107f53 - Deposit or zone: Chita Valley Total - Mining method: open\_pit - Ownership percent: 49.9 % - Resource basis: gross #### Resource Data - Category: inferred - Tonnes: 955000000 - Contained Metal: 719 - Contained Unit: kt #### Prior Estimate - Resource Date: 2026-02-20 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: ALS Patagonia S.A. and ALS Perú S.A. #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-02-27T00:00:00.000Z Reasoning: Total Inferred contained zinc metal for Chita Valley, contributing to polymetallic credits but with lower confidence. - Positive factor: Polymetallic credit - Positive factor: Open-pit mining potential - Negative factor: Inferred resource Evidence · table > 719 Context: 955 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **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 **QP/CP Signed** Polarity: positive 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 ## 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.