# White Pine Copper Announces Positive Pre-Feasibility Study to Revive One of America's Legendary Copper Districts Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c Original source: https://www.prnewswire.com/news-releases/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-americas-legendary-copper-districts-302884129.html Publisher: prnewswire Original announcement: 2026-09-21T14:01:15.126Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: White Pine Copper LLC - Ticker: Unavailable - Exchange: Unavailable - Region: Michigan, USA - Primary commodity: Copper - Secondary commodities: Silver - Document categories: Resource update, Economic study, Metallurgy - Extracted: 2026-09-21 14:03:43 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary White Pine Copper has announced a positive Pre-Feasibility Study for the White Pine North Project in Michigan, reporting a post-tax NPV of US$1.38 billion and an IRR of 23.1%. The project features a 191.2 Mt copper-silver resource and a 137.9 Mt probable reserve, targeting steady-state production of 5.4 Mtpa of ore. Reasoning: The announcement of a robust Pre-Feasibility Study for a large-scale copper project with strong economics and a clear path to production in a critical mineral jurisdiction. - Positive factor: Strong post-tax NPV of US$1.38B - Positive factor: High-grade copper resource \(1.62% Cu\) - Positive factor: First-quartile AISC position - Positive factor: Brownfield redevelopment utilizing existing infrastructure - Positive factor: Probable Mineral Reserve established - Negative factor: Project is still in PFS stage \(preliminary\) Facts used in scoring: 8 ## Classification and evidence **PFS Complete** Polarity: positive Definition: AACE Class 3 study complete. Why it applies: The company announced the results of a Pre-Feasibility Study \(PFS\) for the White Pine North Project. Evidence · text > is pleased to announce the results of a Pre-Feasibility Study \("PFS"\) for its White Pine North Project **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: A probable Mineral Reserve of 137.9 million tonnes was reported. Evidence · text > probable Mineral Reserve of 137.9 million tonnes **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: The MRE includes 169.1 Mt of Indicated resource. Evidence · text > Indicated: 169.1 Mt at 1.64% Cu and 20.66 g/t Ag **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The MRE includes 22.1 Mt of Inferred resource. Evidence · text > Inferred: 22.1 Mt at 1.51% Cu and 22.66 g/t Ag **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The processing route involves a conventional crush-grind-flotation plant. Evidence · text > conventional crush-grind-flotation plant **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 **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("gravity"\) ## Extracted facts Stored fact records: 7. Some facts used in scoring do not have a stored record. ## Resource Estimates (5) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-resource-facts-1) White Pine North Project · copper #### Identity - Project: White Pine North Project - Commodity: copper - Region: michigan, usa - Reported Region: Michigan, USA #### Resource scope - Estimate type: resource - Effective date: 2026-06-05T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:0495bd3c11995c73afcd - Deposit or zone: White Pine North - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 169100000 - Grade: 1.64 - Grade Unit: % - Cutoff Grade: 0.9 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-06-05 #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Strong indicated copper resource. - Positive factor: High grade indicated resource Evidence · text > Indicated: 169.1 Mt at 1.64% Cu and 20.66 g/t Ag #### 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 **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/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-resource-facts-2) White Pine North Project · silver #### Identity - Project: White Pine North Project - Commodity: silver - Region: michigan, usa - Reported Region: Michigan, USA #### Resource scope - Estimate type: resource - Effective date: 2026-06-05T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:0495bd3c11995c73afcd - Deposit or zone: White Pine North - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 169100000 - Grade: 20.66 - Grade Unit: g/t - Cutoff Grade: 0.9 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-06-05 #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Silver byproduct in indicated resource. Evidence · text > Indicated: 169.1 Mt at 1.64% Cu and 20.66 g/t Ag #### 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 **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/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-resource-facts-3) White Pine North Project · copper #### Identity - Project: White Pine North Project - Commodity: copper - Region: michigan, usa - Reported Region: Michigan, USA #### Resource scope - Estimate type: resource - Effective date: 2026-06-05T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:4bfcd03aaa2dc637cf37 - Deposit or zone: White Pine North - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 22100000 - Grade: 1.51 - Grade Unit: % - Cutoff Grade: 0.9 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-06-05 #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Inferred copper resource. - Negative factor: Inferred resource component Evidence · text > Inferred: 22.1 Mt at 1.51% Cu and 22.66 g/t Ag #### 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 **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/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-resource-facts-4) White Pine North Project · silver #### Identity - Project: White Pine North Project - Commodity: silver - Region: michigan, usa - Reported Region: Michigan, USA #### Resource scope - Estimate type: resource - Effective date: 2026-06-05T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:4bfcd03aaa2dc637cf37 - Deposit or zone: White Pine North - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 22100000 - Grade: 22.66 - Grade Unit: g/t - Cutoff Grade: 0.9 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-06-05 #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Silver byproduct in inferred resource. Evidence · text > Inferred: 22.1 Mt at 1.51% Cu and 22.66 g/t Ag #### 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 **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 ### probable [Link to this fact](https://atlas-extractions.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-resource-facts-5) White Pine North Project · silver #### Identity - Project: White Pine North Project - Commodity: silver - Region: michigan, usa - Reported Region: Michigan, USA #### Resource scope - Estimate type: reserve - Effective date: 2026-07-16T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:3402e37aa023eb57995e - Deposit or zone: White Pine North - Mining method: underground #### Resource Data - Category: probable - Tonnes: 137900000 - Grade: 16.02 - Grade Unit: g/t - Cutoff Grade: 0.9 - Cutoff Unit: % #### Prior Estimate - Resource Date: 2026-07-16 #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Silver byproduct in probable reserve. Evidence · text > probable Mineral Reserve of 137.9 million tonnes at 1.04% Cu and 16.02 g/t Ag #### Tags used in scoring **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: category is "probable" **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 **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 (2) ### flotation [Link to this fact](https://atlas-extractions.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-metallurgical-facts-6) White Pine North Project · copper #### Identity - Project: White Pine North Project - Commodity: copper - Region: michigan, usa - Reported Region: Michigan, USA #### Test Work - Program Status: detailed - Test Type: flotation - Processing Route: crushing, SAG and ball mill grinding, gravity concentration, and flotation #### Recovery - Recovery: 85.6 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Good copper recovery via flotation. - Positive factor: Solid copper recovery Evidence · text > copper and silver recoveries of 85.6% and 96.0%, respectively #### Tags used in scoring **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the flotation signal **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: processing\_route matches the gravity signal **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 ### flotation [Link to this fact](https://atlas-extractions.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--6af4a1c3-311c-481a-9fb1-407782737f3c#fact-metallurgical-facts-7) White Pine North Project · silver #### Identity - Project: White Pine North Project - Commodity: silver - Region: michigan, usa - Reported Region: Michigan, USA #### Test Work - Program Status: detailed - Test Type: flotation - Processing Route: crushing, SAG and ball mill grinding, gravity concentration, and flotation #### Recovery - Recovery: 96 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Excellent silver recovery via flotation. - Positive factor: High silver recovery Evidence · text > copper and silver recoveries of 85.6% and 96.0%, respectively #### Tags used in scoring **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the flotation signal **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: processing\_route matches the gravity signal **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: 96% is at or above the exceptional band \(90%\) **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.