# White Pine Copper Announces Positive Pre-Feasibility Study to Revive One of America's Legendary Copper Districts Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce Original source: https://www.newswire.ca/news-releases/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-america-s-legendary-copper-districts-848950392.html Publisher: cnw Original announcement: 2026-09-21T15:01:49.544Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-21T15:04:42.348Z Atlas analysis updated: 2026-09-21T15:04:42.348Z - Company: White Pine Copper LLC - Ticker: Unavailable - Exchange: Unavailable - Region: Michigan, USA - Primary commodity: Copper - Secondary commodities: Silver - Document categories: Resource update, Metallurgy - Extracted: 2026-09-21 15:04:43 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 Probable Mineral Reserve of 137.9 million tonnes at 1.04% Cu and is planned as an underground operation with commercial production targeted for 2030. Reasoning: The Pre-Feasibility Study demonstrates robust economics for a large-scale underground copper-silver project with significant resource confidence. - Positive factor: Strong economic metrics \(NPV US$1.38B, IRR 23.1%\) - Positive factor: Large Indicated resource \(169.1 Mt at 1.64% Cu\) - Positive factor: Probable Reserve established \(137.9 Mt\) - Positive factor: Brownfield redevelopment with existing infrastructure reuse - Positive factor: High-grade copper and silver recoveries - Negative factor: High initial capital cost \(US$905.5 million\) - Negative factor: Economic analysis excludes Inferred resources Facts used in scoring: 8 ## Classification and evidence **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: Paul Richardson, a Qualified Person, reviewed and approved the mineral resource information. Evidence · text > Mr. Richardson is a Qualified Person as defined by National Instrument 43-101 and has reviewed and approved the mineral resource information **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 Mineral Resource Estimate was reported at a cut-off grade of 0.90% Cu. Evidence · text > reported at a cut-off grade of 0.90% Cu **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The project uses a conventional crush-grind-flotation plant. Evidence · text > conventional crush-grind-flotation plant **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("gravity"\) **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## Extracted facts Stored fact records: 8. 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/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#fact-resource-facts-0) 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 - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:0d6a109b16d86ff3293d - Deposit or zone: White Pine North - Mining method: underground - Ownership percent: 100 % - Resource basis: attributable #### Resource Data - Category: indicated - Tonnes: 169100000 - Grade: 1.64 - Grade Unit: % - Contained Metal: 2770000 - Contained Unit: t - Cutoff Grade: 0.9 - Cutoff Unit: % Cu #### 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 resource component. - Positive factor: High grade \(1.64% Cu\) - Positive factor: Large tonnage 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 **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-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#fact-resource-facts-1) 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 - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:0d6a109b16d86ff3293d - Deposit or zone: White Pine North - Mining method: underground - Ownership percent: 100 % - Resource basis: attributable #### Resource Data - Category: indicated - Tonnes: 169100000 - Grade: 20.66 - Grade Unit: g/t - Cutoff Grade: 0.9 - Cutoff Unit: % Cu #### 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: Significant 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-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#fact-resource-facts-2) 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 - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:c74a18a697e4c4f85c86 - Deposit or zone: White Pine North - Mining method: underground - Ownership percent: 100 % - Resource basis: attributable #### Resource Data - Category: inferred - Tonnes: 22100000 - Grade: 1.51 - Grade Unit: % - Contained Metal: 330000 - Contained Unit: t - Cutoff Grade: 0.9 - Cutoff Unit: % Cu #### 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 resource component. - Negative factor: Inferred category limits economic confidence 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 **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-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#fact-resource-facts-3) 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 - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:c74a18a697e4c4f85c86 - Deposit or zone: White Pine North - Mining method: underground - Ownership percent: 100 % - Resource basis: attributable #### Resource Data - Category: inferred - Tonnes: 22100000 - Grade: 22.66 - Grade Unit: g/t - Cutoff Grade: 0.9 - Cutoff Unit: % Cu #### 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 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 ### probable [Link to this fact](https://atlas-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#fact-resource-facts-4) White Pine North Project · copper #### Identity - Project: White Pine North Project - Commodity: copper - Region: michigan, usa - Reported Region: Michigan, USA #### Resource scope - Estimate type: reserve - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:559e28cd81820e7b03c9 - Deposit or zone: White Pine North - Mining method: underground - Ownership percent: 100 % - Resource basis: attributable #### Resource Data - Category: probable - Tonnes: 137900000 - Grade: 1.04 - Grade Unit: % - Contained Metal: 3171 - Contained Unit: million pounds - 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: Solid reserve base for the PFS. - Positive factor: Established Probable Reserve - Positive factor: Supports 26-year mine life Evidence · text > probable Mineral Reserve of 137.9 million tonnes; steady-state production of 5.4 million ore tonnes per year #### 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 **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-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#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 - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Paul Richardson - Resource group id: resource:559e28cd81820e7b03c9 - Deposit or zone: White Pine North - Mining method: underground - Ownership percent: 100 % - Resource basis: attributable #### Resource Data - Category: probable - Tonnes: 137900000 - Grade: 16.02 - Grade Unit: g/t - Contained Metal: 71 - Contained Unit: moz - 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: Significant silver byproduct in reserve. Evidence · text > totals 137.9 million tonnes at 1.04% Cu and 16.02 g/t Ag, containing approximately 3,171 million pounds of copper and 71.0 million ounces of silver. #### 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 **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-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#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 - Sample: conventional crush-grind-flotation plant #### Recovery - Recovery: 85.6 % - Recovery Basis: actual\_test - Conc. Grade: 26.2 - Conc. Grade Unit: % #### Lab - Laboratory: Intertek's Base Metals Laboratory #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Robust metallurgical results supporting the PFS. - Positive factor: Strong copper recovery \(85.6%\) - Positive factor: Clean concentrate \(26.2% Cu\) Evidence · text > copper and silver recoveries of 85.6% and 96.0%, respectively, into a clean, low-penalty concentrate yielding 26.2% copper #### 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-staging.minestarters.com/news/white-pine-copper-announces-positive-pre-feasibility-study-to-revive-one-of-amer--0934f8a1-176f-4080-a848-dd538d9d24ce#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 - Sample: conventional crush-grind-flotation plant #### Recovery - Recovery: 96 % - Recovery Basis: actual\_test - Conc. Grade: 451 - Conc. Grade Unit: g/t #### Lab - Laboratory: Intertek's Base Metals Laboratory #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Very high silver recovery. - Positive factor: Excellent silver recovery \(96.0%\) - Positive factor: High grade concentrate \(451 g/t Ag\) Evidence · text > copper and silver recoveries of 85.6% and 96.0%, respectively, into a clean, low-penalty concentrate yielding 26.2% copper and 451 g/t silver. #### 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.