# Selkirk Copper’s $494M value for Minto nearly triple its costs Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7 Original source: https://www.mining.com/selkirk-coppers-494m-value-for-minto-nearly-triple-its-costs/ Publisher: miningcom Original announcement: 2026-09-22T15:26:01.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-22T21:22:06.651Z Atlas analysis updated: 2026-09-22T21:22:06.651Z - Company: Selkirk Copper Mines - Ticker: SCMI - Exchange: Unavailable - Region: Yukon - Primary commodity: Copper - Secondary commodities: Gold, Silver - Document categories: Resource update, Other - Extracted: 2026-09-22 21:22:07 UTC Narrative sentiment: 0.20 · Bullish ## Minestarters Atlas summary Selkirk Copper Mines released a Preliminary Economic Assessment \(PEA\) for the Minto project in Yukon, reporting an after-tax NPV of $494 million and an IRR of 47.8%. While the economics appear strong, the market reacted negatively due to high metal price assumptions and the exclusion of certain capital expenditures from the base case. Reasoning: The document reports a PEA with strong economics but notes significant exclusions and high price assumptions that led to a market sell-off. - Positive factor: Strong NPV of $494M - Positive factor: High IRR of 47.8% - Positive factor: Short payback period of 1.9 years - Positive factor: Recent resource update showed nearly tripled contained metal - Negative factor: High metal price assumptions used in PEA - Negative factor: PEA excludes sustaining capital, dewatering, and rehabilitation costs - Negative factor: Share price dropped 18% following announcement Facts used in scoring: 6 ## Classification and evidence **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The text mentions a recent resource update that nearly tripled contained metal. Evidence · text > The PEA comes weeks after Selkirk released a resource update for Minto ## Extracted facts Stored fact records: 6. Some facts used in scoring do not have a stored record. ## Resource Estimates (6) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7#fact-resource-facts-0) Minto · copper #### Identity - Project: Minto - Commodity: copper - Region: canada\_yt - Reported Region: Yukon - Ticker: SCMI #### Resource scope - Estimate type: resource - Resource group id: resource:005238a739346adbce89 - Deposit or zone: Minto - Mining method: combined #### Resource Data - Category: indicated - Tonnes: 47800000 - Grade: 0.89 - Grade Unit: % - Contained Metal: 940000000 - Contained Unit: lb #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: High tonnage of copper in the M&I category. - Positive factor: Large copper tonnage Evidence · text > Minto hosts 47.8 million measured and indicated tonnes grading 0.89% copper #### 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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **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 **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-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7#fact-resource-facts-1) Minto · gold #### Identity - Project: Minto - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SCMI #### Resource scope - Estimate type: resource - Resource group id: resource:005238a739346adbce89 - Deposit or zone: Minto - Mining method: combined #### Resource Data - Category: indicated - Tonnes: 47800000 - Grade: 0.34 - Grade Unit: g/t - Contained Metal: 530000 - Contained Unit: oz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Gold byproduct in the M&I resource. Evidence · text > 0.34 gram gold per tonne #### 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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **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 **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-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7#fact-resource-facts-2) Minto · silver #### Identity - Project: Minto - Commodity: silver - Region: canada\_yt - Reported Region: Yukon - Ticker: SCMI #### Resource scope - Estimate type: resource - Resource group id: resource:005238a739346adbce89 - Deposit or zone: Minto - Mining method: combined #### Resource Data - Category: indicated - Tonnes: 47800000 - Grade: 3.2 - Grade Unit: g/t - Contained Metal: 4800000 - Contained Unit: oz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Silver byproduct in the M&I resource. Evidence · text > 3.2 grams silver #### 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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **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 **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-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7#fact-resource-facts-3) Minto · copper #### Identity - Project: Minto - Commodity: copper - Region: canada\_yt - Reported Region: Yukon - Ticker: SCMI #### Resource scope - Estimate type: resource - Resource group id: resource:ef7717b8fe50c6e51303 - Deposit or zone: Minto - Mining method: combined #### Resource Data - Category: inferred - Tonnes: 16900000 - Grade: 0.76 - Grade Unit: % - Contained Metal: 281000000 - Contained Unit: lb #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred copper resource. Evidence · text > Inferred resources total 16.9 million tonnes at 0.76% copper #### 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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **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 **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-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7#fact-resource-facts-4) Minto · gold #### Identity - Project: Minto - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SCMI #### Resource scope - Estimate type: resource - Resource group id: resource:ef7717b8fe50c6e51303 - Deposit or zone: Minto - Mining method: combined #### Resource Data - Category: inferred - Tonnes: 16900000 - Grade: 0.26 - Grade Unit: g/t - Contained Metal: 142000 - Contained Unit: oz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred gold resource. Evidence · text > 0.26 gram gold #### 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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **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 **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-staging.minestarters.com/news/selkirk-copper-s-494m-value-for-minto-nearly-triple-its-costs--697187a1-1681-415d-9677-2129ae747be7#fact-resource-facts-5) Minto · silver #### Identity - Project: Minto - Commodity: silver - Region: canada\_yt - Reported Region: Yukon - Ticker: SCMI #### Resource scope - Estimate type: resource - Resource group id: resource:ef7717b8fe50c6e51303 - Deposit or zone: Minto - Mining method: combined #### Resource Data - Category: inferred - Tonnes: 16900000 - Grade: 2.7 - Grade Unit: g/t - Contained Metal: 1500000 - Contained Unit: oz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Inferred silver resource. Evidence · text > 2.7 grams silver #### 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 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release **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 **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 ## 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.