# Arizona Sonoran Pre-Feasibility Study Delivers Exceptional Results for the Cactus Project, Outlining Long-Life, Low-Cost Copper Production in Arizona Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36 Original source: https://money.tmx.com/en/quote/ASCU/news/4576466215804688/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu Publisher: tmx Original announcement: 2025-10-20T10:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Arizona Sonoran Copper Company Inc. - Ticker: ASCU - Exchange: TSX - Region: Arizona - Primary commodity: Copper - Secondary commodities: None reported - Document categories: Resource update, Economic study, Metallurgy - Extracted: 2026-09-17 11:29:55 UTC Narrative sentiment: 0.90 · Bullish ## Minestarters Atlas summary Arizona Sonoran Copper Company's Pre-Feasibility Study for the Cactus Project outlines robust economics, including a post-tax NPV8% of $2.3 billion and an IRR of 22.8% at a base case copper price of $4.25/lb. The study projects a 22-year mine life with low C1 cash costs of $1.34/lb and AISC of $1.62/lb, positioning it as a low-cost copper producer. The project benefits from significant Proven and Probable reserves, high metallurgical recoveries, and a Tier 1 location in Arizona, with a Definitive Feasibility Study and permitting amendments planned for completion in 2H 2026. Reasoning: The Pre-Feasibility Study for the Cactus Project delivers exceptional economics with a robust post-tax IRR and NPV, supported by low operating costs, a long mine life, and significant copper reserves in a Tier 1 jurisdiction. The study represents a major de-risking milestone, despite ongoing financing and permitting work. - Positive factor: Strong post-tax IRR of 22.8% and NPV8% of $2.3 billion for the base case. - Positive factor: Low C1 cash costs \($1.34/lb\) and AISC \($1.62/lb\) position the project in the bottom quartile of the cost curve. - Positive factor: Long operational life of 22 years with significant Proven and Probable copper reserves. - Positive factor: High capital intensity of $10,894 per tonne of copper cathodes produced, indicating efficient capital use. - Positive factor: Located in Arizona, a Tier 1 mining jurisdiction with existing infrastructure and community support. - Positive factor: Metallurgical testwork confirms good copper recoveries \(75%\) with conventional heap leach-SXEW processing. - Positive factor: Significant growth in Measured and Indicated mineral resources \(over 580%\) and high conversion to reserves \(65%\). - Positive factor: PFS base case copper price assumption \($4.25/lb\) is conservative compared to long-term consensus \($4.34/lb\) and spot \($5.02/lb\). - Negative factor: Project financing is still underway, indicating a material funding gap. - Negative factor: Permitting amendments are required to reflect changes in the mine plan, with an expected completion in 2H 2026. - Negative factor: Only price sensitivity is disclosed, lacking discount rate sensitivity for comprehensive risk assessment. - Negative factor: Variable cut-off grades for resource estimates, which can complicate comparability. Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 10 ## Classification and evidence **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: A current resource fact retains the disclosed cut-off grade **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: the document describes a heap\_leach route \("heap leach"\) **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a mill\_cil route \("concentrator"\) ## Extracted facts Stored fact records: 8. Some facts used in scoring do not have a stored record. ## Resource Estimates (7) ### proven [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-2) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: reserve - Effective date: 2025-09-17T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Gordon Zurowski - Resource group id: resource:ce30a7e8987d8582cc58 - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: proven - Tonnes: 64256000 - Grade: 0.79 - Grade Unit: % CuT - Contained Metal: 1019213 - Contained Unit: k lbs - Cutoff Grade: 0 - Cutoff Unit: USD\_per\_t #### Prior Estimate - Resource Date: 2025-09-17 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The Proven Reserve estimate provides a high-confidence base for the project's economic evaluation. - Positive factor: High confidence Proven Reserve category. - Positive factor: Significant contained copper \(1.02 billion lbs\). #### Tags used in scoring **Proven Reserve** Polarity: positive Definition: Measured Resource with demonstrated economic viability after applying modifying factors. Why it applies: The document reports Proven Mineral Reserves for the Cactus Project. Evidence · table > Proven Context: Proven **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: Gordon Zurowski is named as the Qualified Person for the open pit estimates of Parks/Salyer and Cactus West. Evidence · text > The Qualified Person for the open pit estimates of Parks/Salyer and Cactus West is Gordon Zurowski of AGP Mining Consultants Inc. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports #### Rejected tags **NI 43-101 Compliant** — Rejected; excluded from scoring Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Reason: Mineral Reserves were estimated in accordance with CIM Definition Standards, which are compliant with NI 43-101. Evidence · text > The Mineral Reserves were estimated in accordance with the CIM Definition Standards for Mineral Resources and Mineral Reserves; The Mineral Reserves are supported by an open pit mine plan, based on designs and schedules, guided by relevant optimization procedures. ### probable [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-3) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: reserve - Effective date: 2025-09-17T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Gordon Zurowski - Resource group id: resource:7f0492073a720e84f7e7 - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: probable - Tonnes: 448603000 - Grade: 0.48 - Grade Unit: % CuT - Contained Metal: 4284673 - Contained Unit: k lbs - Cutoff Grade: 0 - Cutoff Unit: USD\_per\_t #### Prior Estimate - Resource Date: 2025-09-17 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The Probable Reserve estimate significantly contributes to the project's overall economic viability and mine life. - Positive factor: Large Probable Reserve category. - Positive factor: Significant contained copper \(4.28 billion lbs\). #### Tags used in scoring **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: The document reports Probable Mineral Reserves for the Cactus Project. Evidence · table > Probable Context: Probable **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: Gordon Zurowski is named as the Qualified Person for the open pit estimates of Parks/Salyer and Cactus West. Evidence · text > The Qualified Person for the open pit estimates of Parks/Salyer and Cactus West is Gordon Zurowski of AGP Mining Consultants Inc. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports #### Rejected tags **NI 43-101 Compliant** — Rejected; excluded from scoring Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Reason: Mineral Reserves were estimated in accordance with CIM Definition Standards, which are compliant with NI 43-101. Evidence · text > The Mineral Reserves were estimated in accordance with the CIM Definition Standards for Mineral Resources and Mineral Reserves; The Mineral Reserves are supported by an open pit mine plan, based on designs and schedules, guided by relevant optimization procedures. ### probable [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-4) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: reserve - Effective date: 2025-09-17T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Gordon Zurowski - Resource group id: resource:57115cb2d72e0c1a5b17 - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: probable - Tonnes: 512859000 - Grade: 0.52 - Grade Unit: % CuT - Contained Metal: 5303886 - Contained Unit: k lbs - Cutoff Grade: 0 - Cutoff Unit: USD\_per\_t #### Prior Estimate - Resource Date: 2025-09-17 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The combined Proven and Probable Reserves form a substantial and high-confidence base for the project's mine plan and economic assessment. - Positive factor: Total Proven + Probable Reserves of 512.86 million tons at 0.52% CuT. - Positive factor: Total contained copper of 5.3 billion lbs. - Positive factor: High conversion of M&I resources to reserves \(65%\). #### Tags used in scoring **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: The combined Proven + Probable category is treated as Probable as per extraction rules. Evidence · table > Total Proven + Probable Context: Total Proven + Probable **Category Upgrade** Polarity: positive Definition: Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal. Why it applies: The document states a 65% conversion of leachable M&I mineral resources to mineral reserves. Evidence · text > 65% conversion of leachable M&I mineral resources to mineral reserves **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: Gordon Zurowski is named as the Qualified Person for the open pit estimates of Parks/Salyer and Cactus West. Evidence · text > The Qualified Person for the open pit estimates of Parks/Salyer and Cactus West is Gordon Zurowski of AGP Mining Consultants Inc. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports #### Rejected tags **NI 43-101 Compliant** — Rejected; excluded from scoring Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Reason: Mineral Reserves were estimated in accordance with CIM Definition Standards, which are compliant with NI 43-101. Evidence · text > The Mineral Reserves were estimated in accordance with the CIM Definition Standards for Mineral Resources and Mineral Reserves; The Mineral Reserves are supported by an open pit mine plan, based on designs and schedules, guided by relevant optimization procedures. ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-5) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: resource - Effective date: 2025-09-16T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Allan L. Schappert - Resource group id: resource:414c8e8d8b32fda8b449 - Mining method: combined - Ownership percent: 100 % #### Resource Data - Category: measured - Tonnes: 131400000 - Grade: 0.8 - Grade Unit: % CuT - Contained Metal: 2104400 - Contained Unit: k lbs - Cutoff Grade: 0.087 - Cutoff Unit: % TSol #### Prior Estimate - Resource Date: 2025-09-16 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The Measured Resource estimate provides a high level of geological confidence for a portion of the project's mineral endowment. - Positive factor: High confidence Measured Resource category. - Positive factor: Significant contained copper \(2.1 billion lbs\). - Negative factor: Variable cut-off grades reported for different material types and mining methods. #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: The document reports Measured Mineral Resources for the Cactus Project. Evidence · table > Total Measured Context: Total Measured **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: Allan L. Schappert is named as the Qualified Person for Mineral Resources. Evidence · text > Mineral Resources , Allan L. Schappert, CPG, SME-RM, ALS GeoResources LLC **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: Mineral resources are reported using standards in accordance with NI 43-101. Evidence · text > The mineral resource estimates \(including mineral reserves\) declared by the Company were estimated, categorized and reported using standards and definitions in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards for Mineral Resources and Mineral Reserves \(the “CIM Standards”\) in accordance with National Instrument 43-101 of the Canadian Securities Administrators \(“NI 43-101”\), which governs the public disclosure of scientific and technical information concerning mineral projects. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-6) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: resource - Effective date: 2025-09-16T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Allan L. Schappert - Resource group id: resource:0bf793ffce0c58b86986 - Mining method: combined - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 1011400000 - Grade: 0.44 - Grade Unit: % CuT - Contained Metal: 8890800 - Contained Unit: k lbs - Cutoff Grade: 0.087 - Cutoff Unit: % TSol #### Prior Estimate - Resource Date: 2025-09-16 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The Indicated Resource estimate provides a substantial base for future reserve conversion and project expansion. - Positive factor: Large Indicated Resource category. - Positive factor: Significant contained copper \(8.89 billion lbs\). - Negative factor: Variable cut-off grades reported for different material types and mining methods. #### 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: The document reports Indicated Mineral Resources for the Cactus Project. Evidence · table > Total Indicated Context: Total Indicated **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: Allan L. Schappert is named as the Qualified Person for Mineral Resources. Evidence · text > Mineral Resources , Allan L. Schappert, CPG, SME-RM, ALS GeoResources LLC **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: Mineral resources are reported using standards in accordance with NI 43-101. Evidence · text > The mineral resource estimates \(including mineral reserves\) declared by the Company were estimated, categorized and reported using standards and definitions in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards for Mineral Resources and Mineral Reserves \(the “CIM Standards”\) in accordance with National Instrument 43-101 of the Canadian Securities Administrators \(“NI 43-101”\), which governs the public disclosure of scientific and technical information concerning mineral projects. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-7) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: resource - Effective date: 2025-09-16T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Allan L. Schappert - Resource group id: resource:9f69b898e47f0abc1032 - Mining method: combined - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 1142800000 - Grade: 0.48 - Grade Unit: % CuT - Contained Metal: 10995200 - Contained Unit: k lbs - Cutoff Grade: 0.087 - Cutoff Unit: % TSol #### Prior Estimate - Resource Date: 2025-09-16 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The combined Measured and Indicated Resource estimate represents a substantial and high-confidence mineral endowment, with significant growth reported. - Positive factor: Total Measured + Indicated Resources of 1.14 billion tons at 0.48% CuT. - Positive factor: Total contained copper of 11 billion lbs. - Positive factor: Mineral resources have grown by over 580% in the M&I category. - Negative factor: Variable cut-off grades reported for different material types and mining methods. #### 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: The combined Measured + Indicated category is treated as Indicated as per extraction rules. Evidence · table > Total M&I Context: Total M&I **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: Mineral resources have grown by over 580% in the M&I category. Evidence · text > mineral resources have grown by over 580% in the M&I category **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: Allan L. Schappert is named as the Qualified Person for Mineral Resources. Evidence · text > Mineral Resources , Allan L. Schappert, CPG, SME-RM, ALS GeoResources LLC **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: Mineral resources are reported using standards in accordance with NI 43-101. Evidence · text > The mineral resource estimates \(including mineral reserves\) declared by the Company were estimated, categorized and reported using standards and definitions in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards for Mineral Resources and Mineral Reserves \(the “CIM Standards”\) in accordance with National Instrument 43-101 of the Canadian Securities Administrators \(“NI 43-101”\), which governs the public disclosure of scientific and technical information concerning mineral projects. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-resource-facts-8) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Resource scope - Estimate type: resource - Effective date: 2025-09-16T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Allan L. Schappert - Resource group id: resource:a9eacd4ae57b26305d0a - Mining method: combined - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 233400000 - Grade: 0.37 - Grade Unit: % CuT - Contained Metal: 1708100 - Contained Unit: k lbs - Cutoff Grade: 0.087 - Cutoff Unit: % TSol #### Prior Estimate - Resource Date: 2025-09-16 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: The Inferred Resource estimate provides future exploration potential but carries a lower level of geological confidence. - Positive factor: Significant Inferred Resource, indicating exploration upside. - Negative factor: Inferred resources are speculative and cannot support economic studies alone. - Negative factor: Variable cut-off grades reported for different material types and mining methods. #### 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: The document reports Inferred Mineral Resources for the Cactus Project. Evidence · table > Total Inferred Context: Total Inferred **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: Allan L. Schappert is named as the Qualified Person for Mineral Resources. Evidence · text > Mineral Resources , Allan L. Schappert, CPG, SME-RM, ALS GeoResources LLC **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: Mineral resources are reported using standards in accordance with NI 43-101. Evidence · text > The mineral resource estimates \(including mineral reserves\) declared by the Company were estimated, categorized and reported using standards and definitions in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards for Mineral Resources and Mineral Reserves \(the “CIM Standards”\) in accordance with National Instrument 43-101 of the Canadian Securities Administrators \(“NI 43-101”\), which governs the public disclosure of scientific and technical information concerning mineral projects. **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 **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## Metallurgical Results (1) ### column leach [Link to this fact](https://atlas-extractions.minestarters.com/news/arizona-sonoran-pre-feasibility-study-delivers-exceptional-results-for-the-cactu--e1c3ce7b-8ae2-4f12-97ca-1ef846027b36#fact-metallurgical-facts-9) Cactus Project · copper #### Identity - Project: Cactus Project - Commodity: copper - Region: usa\_az - Reported Region: Arizona - Ticker: ASCU #### Test Work - Program Status: detailed - Test Type: column leach - Processing Route: heap leach, SX-EW #### Recovery - Recovery: 75 % - Recovery Basis: actual\_test - Head Grade Unit: % CuT #### Reagents - Acid: 3.5 kg/t #### Lab - Laboratory: BaseMet, McClelland labs - Consultant: HydroGeoSense, M3 Engineering, Laurie Tahija #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2025-10-20T00:00:00.000Z Reasoning: Metallurgical testwork confirms effective copper recovery with conventional processing, demonstrating improved performance and low acid consumption, which supports the project's technical feasibility. - Positive factor: Good copper recovery \(75%\) for a heap leach-SXEW process. - Positive factor: Low net acid consumption \(3.5 kg/tonne\). - Positive factor: Testwork conducted on material from multiple deposits \(Parks/Salyer and Cactus\). - Positive factor: Recovery performance improved from 65% to 75%. #### Tags used in scoring **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: An average of 75% total copper extracted is good for a heap leach process. Evidence · text > average of 75% of total copper extracted inclusive of heap efficiency factor of 95% **Multi-Domain Tested** Polarity: positive Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed. Why it applies: Metallurgical testwork used samples from both Parks/Salyer and Cactus deposits. Evidence · text > column leach testing program for oxides and enriched sulphides, from Parks/Salyer and Cactus, is ongoing at BaseMet and McClelland labs **Recovery Improving** Polarity: positive Definition: Recovery improved versus a like-for-like prior test program on the same domain and route. Why it applies: Metallurgical and recovery performance improved to 75% Total Copper recovery from 65% Total Copper. Evidence · text > Metallurgical and recovery performance improved to 75% Total Copper recovery from 65% Total Copper **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: The processing route involves heap leach and SXEW. Evidence · text > Open-pit, Heap Leach and SXEW Operation with Oxide and Enriched Materials from Cactus and Parks/Salyer open pits over 22 years of processing **Byproduct Commodity** Polarity: neutral Definition: The tested commodity is a byproduct rather than the primary economic driver. Why it applies: the release describes a byproduct credit ## 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.