# Contango Announces Updated Mineral Resource Estimate for Kitsault Valley Project; Indicated Resources Increase 93% to 89.5 Million Silver Equivalent Ounces Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e Original source: https://orestocks.com/company/CTGO/press-releases/6862388330510021 Publisher: orestocks Original announcement: 2026-09-22T12:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Contango Silver and Gold Inc. - Ticker: CTGO - Exchange: Unavailable - Region: Northwest British Columbia's Golden Triangle - Primary commodity: Silver - Secondary commodities: Gold, Copper, Lead, Zinc - Document categories: Resource update - Extracted: 2026-09-22 12:32:22 UTC Narrative sentiment: 0.70 · Bullish ## Minestarters Atlas summary Contango Silver and Gold Inc. announced an updated Mineral Resource Estimate for its Kitsault Valley Project in British Columbia, showing a 93% increase in Indicated silver equivalent ounces to 89.55 million ounces. The estimate, effective September 11, 2026, integrates new drilling and a revised geological interpretation, providing a stronger foundation for future economic studies. The company plans further MRE updates and an S-K 1300 Initial Assessment in 2027. Reasoning: The updated MRE shows a substantial 93% increase in Indicated silver equivalent ounces, driven by new drilling and a revised geological interpretation, which significantly de-risks the project. While Inferred resources decreased, the overall confidence in the resource base has improved, setting a strong foundation for future economic studies. The estimate is compliant with SEC S-K 1300 and has QP sign-off, although the QP is not independent. - Positive factor: Significant increase in Indicated silver equivalent resources \(93%\) - Positive factor: Improved geological understanding and updated models - Positive factor: Comprehensive drill database supporting the estimate - Positive factor: QP/CP sign-off and SEC S-K 1300 compliance - Positive factor: Clear roadmap for future MRE updates and economic studies - Negative factor: Decrease in Inferred resources - Negative factor: QP is not independent of the company - Negative factor: No Measured Resources or Mineral Reserves reported Facts used in scoring: 49 ## 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The source explicitly discloses a revised resource estimate Evidence · text > Updated Mineral Resource Estimate ## Extracted facts Stored fact records: 49. Some facts used in scoring do not have a stored record. ## Resource Estimates (49) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-0) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 89.14 - Grade Unit: g/t - Contained Metal: 6.13 - Contained Unit: moz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This indicated resource for silver at Homestake contributes to the overall increase in indicated resources, showing good grade and confidence. - Positive factor: Indicated category provides higher confidence - Positive factor: Strong silver grade for an indicated resource Evidence · table > 89.14 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-1) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 5.63 - Grade Unit: g/t - Contained Metal: 387.42 - Contained Unit: koz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated gold resource at Homestake shows a very strong grade, contributing positively to the overall resource update. - Positive factor: High gold grade for an indicated resource - Positive factor: Indicated category provides higher confidence Evidence · table > 5.63 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-2) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 0.13 - Grade Unit: % - Contained Metal: 6.32 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated copper resource at Homestake is present but at a relatively low grade, likely contributing as a byproduct. - Positive factor: Indicated category provides higher confidence Evidence · table > 0.13 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-3) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 0.13 - Grade Unit: % - Contained Metal: 5.96 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated lead resource at Homestake is present but at a relatively low grade, likely contributing as a byproduct. - Positive factor: Indicated category provides higher confidence Evidence · table > 0.13 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-4) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 0.15 - Grade Unit: % - Contained Metal: 7.02 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated zinc resource at Homestake is present but at a relatively low grade, likely contributing as a byproduct. - Positive factor: Indicated category provides higher confidence Evidence · table > 0.15 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-5) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d5626f4a36f9c251aa19 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 5520000 - Grade: 296.1 - Grade Unit: g/t - Contained Metal: 52.57 - Contained Unit: moz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated silver resource at Dolly Varden shows a very strong grade and substantial contained metal, contributing significantly to the overall resource increase. - Positive factor: High silver grade for an indicated resource - Positive factor: Significant contained silver ounces - Positive factor: Indicated category provides higher confidence Evidence · table > 52.57 Context: 5.52 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-6) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d5626f4a36f9c251aa19 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 5520000 - Grade: 0.04 - Grade Unit: g/t - Contained Metal: 7.29 - Contained Unit: koz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated gold resource at Dolly Varden is very low grade, likely a minor byproduct. - Positive factor: Indicated category provides higher confidence Evidence · table > 7.29 Context: 5.52 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-7) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d5626f4a36f9c251aa19 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 5520000 - Grade: 0.03 - Grade Unit: % - Contained Metal: 3.06 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated copper resource at Dolly Varden is very low grade, likely a minor byproduct. - Positive factor: Indicated category provides higher confidence Evidence · table > 3.06 Context: 5.52 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-8) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d5626f4a36f9c251aa19 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 5520000 - Grade: 0.59 - Grade Unit: % - Contained Metal: 72.2 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated lead resource at Dolly Varden shows a moderate grade and contained metal, contributing to the polymetallic nature of the project. - Positive factor: Indicated category provides higher confidence - Positive factor: Moderate contained lead ounces Evidence · table > 72.20 Context: 5.52 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-9) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d5626f4a36f9c251aa19 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 5520000 - Grade: 0.67 - Grade Unit: % - Contained Metal: 81.83 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The indicated zinc resource at Dolly Varden shows a moderate grade and contained metal, contributing to the polymetallic nature of the project. - Positive factor: Indicated category provides higher confidence - Positive factor: Moderate contained zinc ounces Evidence · table > 81.83 Context: 5.52 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-10) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:966180cf9a7282bd6762 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 7660000 - Grade: 238.34 - Grade Unit: g/t - Contained Metal: 58.7 - Contained Unit: moz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 - Prior Tonnes: 4150000 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total indicated silver resource shows a very strong grade and substantial contained metal, with a significant increase from the prior estimate, indicating strong project growth and de-risking. - Positive factor: High silver grade for an indicated resource - Positive factor: Significant contained silver ounces - Positive factor: Indicated category provides higher confidence - Positive factor: Tonnage Growth - Positive factor: Contained Metal Growth Evidence · table > 58.70 Context: 7.66 #### 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 **Tonnage Growth** Polarity: positive Definition: Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved. Why it applies: 7660000 against 4150000 previously **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-11) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:966180cf9a7282bd6762 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 7660000 - Grade: 1.6 - Grade Unit: g/t - Contained Metal: 394.7 - Contained Unit: koz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total indicated gold resource shows a moderate grade, contributing to the overall polymetallic resource. - Positive factor: Indicated category provides higher confidence - Positive factor: Moderate gold grade Evidence · table > 394.70 Context: 7.66 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-12) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:966180cf9a7282bd6762 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 7660000 - Grade: 0.06 - Grade Unit: % - Contained Metal: 9.38 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total indicated copper resource is low grade, likely a minor byproduct. - Positive factor: Indicated category provides higher confidence Evidence · table > 9.38 Context: 7.66 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-13) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:966180cf9a7282bd6762 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 7660000 - Grade: 0.46 - Grade Unit: % - Contained Metal: 78.16 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total indicated lead resource shows a moderate grade and contained metal, contributing to the polymetallic nature of the project. - Positive factor: Indicated category provides higher confidence - Positive factor: Moderate contained lead ounces Evidence · table > 78.16 Context: 7.66 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-14) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:966180cf9a7282bd6762 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 7660000 - Grade: 0.53 - Grade Unit: % - Contained Metal: 88.85 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total indicated zinc resource shows a moderate grade and contained metal, contributing to the polymetallic nature of the project. - Positive factor: Indicated category provides higher confidence - Positive factor: Moderate contained zinc ounces Evidence · table > 88.85 Context: 7.66 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-15) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 53.91 - Grade Unit: g/t - Contained Metal: 7.97 - Contained Unit: moz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 53.91 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-16) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 4.17 - Grade Unit: g/t - Contained Metal: 615.82 - Contained Unit: koz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred gold resource at Homestake shows a moderate grade, providing potential upside but with lower geological confidence. - Positive factor: Moderate gold grade - Negative factor: Inferred category has lower confidence Evidence · table > 4.17 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-17) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 0.04 - Grade Unit: % - Contained Metal: 4.24 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred copper resource at Homestake is very low grade, likely a minor byproduct with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 0.04 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-18) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 0.17 - Grade Unit: % - Contained Metal: 16.86 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred lead resource at Homestake is present but at a relatively low grade, likely contributing as a byproduct with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 0.17 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-19) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 0.15 - Grade Unit: % - Contained Metal: 14.69 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred zinc resource at Homestake is present but at a relatively low grade, likely contributing as a byproduct with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 0.15 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-20) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:cf2f93b38fb165f7b8f6 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 1710000 - Grade: 269.91 - Grade Unit: g/t - Contained Metal: 14.84 - Contained Unit: moz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Dolly Varden shows a strong grade, providing potential upside but with lower geological confidence. - Positive factor: High silver grade - Negative factor: Inferred category has lower confidence Evidence · table > 14.84 Context: 1.71 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-21) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:cf2f93b38fb165f7b8f6 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 1710000 - Grade: 0.1 - Grade Unit: g/t - Contained Metal: 4.99 - Contained Unit: koz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred gold resource at Dolly Varden is very low grade, likely a minor byproduct with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 4.99 Context: 1.71 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-22) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:cf2f93b38fb165f7b8f6 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 1710000 - Grade: 0.05 - Grade Unit: % - Contained Metal: 1.8 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred copper resource at Dolly Varden is very low grade, likely a minor byproduct with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 1.80 Context: 1.71 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-23) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:cf2f93b38fb165f7b8f6 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 1710000 - Grade: 0.62 - Grade Unit: % - Contained Metal: 23.38 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred lead resource at Dolly Varden shows a moderate grade and contained metal, providing potential upside but with lower confidence. - Positive factor: Moderate contained lead ounces - Negative factor: Inferred category has lower confidence Evidence · table > 23.38 Context: 1.71 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-24) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:cf2f93b38fb165f7b8f6 - Deposit or zone: Dolly Varden - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 1710000 - Grade: 0.9 - Grade Unit: % - Contained Metal: 33.92 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred zinc resource at Dolly Varden shows a moderate grade and contained metal, providing potential upside but with lower confidence. - Positive factor: Moderate contained zinc ounces - Negative factor: Inferred category has lower confidence Evidence · table > 33.92 Context: 1.71 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-25) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d83b908f516d9315a498 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 6310000 - Grade: 112.5 - Grade Unit: g/t - Contained Metal: 22.8 - Contained Unit: moz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 - Prior Tonnes: 6830000 - Prior Contained Metal: 86.73 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total inferred silver resource shows a decrease in both tonnage and contained metal compared to the prior estimate, indicating a downgrade in the inferred category. - Negative factor: Inferred category has lower confidence - Negative factor: Tonnage Decline - Negative factor: Contained Metal Decline Evidence · table > 22.80 Context: 6.31 #### 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 **Tonnage Decline** Polarity: negative Definition: Resource tonnage decreased vs prior estimate — pit optimization removed marginal material or geological model revised down. Why it applies: 6310000 against 6830000 previously **Contained Metal Decline** Polarity: negative Definition: Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain. Why it applies: 22.8 against 86.73 previously **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-26) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d83b908f516d9315a498 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 6310000 - Grade: 3.06 - Grade Unit: g/t - Contained Metal: 620.82 - Contained Unit: koz - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total inferred gold resource shows a moderate grade, providing potential upside but with lower geological confidence. - Positive factor: Moderate gold grade - Negative factor: Inferred category has lower confidence Evidence · table > 620.82 Context: 6.31 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-27) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d83b908f516d9315a498 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 6310000 - Grade: 0.04 - Grade Unit: % - Contained Metal: 6.04 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total inferred copper resource is low grade, likely a minor byproduct with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 6.04 Context: 6.31 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-28) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:d83b908f516d9315a498 - Deposit or zone: Project Total - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 6310000 - Grade: 0.29 - Grade Unit: % - Contained Metal: 40.24 - Contained Unit: mlb - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The total inferred lead resource shows a moderate grade and contained metal, providing potential upside but with lower confidence. - Negative factor: Inferred category has lower confidence Evidence · table > 40.24 Context: 6.31 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-29) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:3a84a7e132015a06e322 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 238340000 - Grade: 1.6 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 89.55 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 1.60 Context: 238.34 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-30) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:3a84a7e132015a06e322 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 238340000 - Grade: 0.06 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 89.55 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.06 Context: 238.34 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-31) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:3a84a7e132015a06e322 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 238340000 - Grade: 0.53 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 89.55 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.53 Context: 238.34 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-32) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:3a84a7e132015a06e322 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 238340000 - Grade: 0.46 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 89.55 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.46 Context: 238.34 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-33) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:3a84a7e132015a06e322 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 238340000 - Grade: 363 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 89.55 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 363.0 Context: 238.34 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-34) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:7519063783dbeff07d30 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 112500000 - Grade: 3.06 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 64.92 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 3.06 Context: 112.50 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-35) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:7519063783dbeff07d30 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 112500000 - Grade: 0.04 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 64.92 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.04 Context: 112.50 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-36) Kitsault Valley · copper Historical result Needs review: historical\_restatement #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:7519063783dbeff07d30 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 112500000 - Grade: 0.35 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 64.92 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.35 Context: 112.50 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-37) Kitsault Valley · zinc Historical result Needs review: historical\_restatement #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:7519063783dbeff07d30 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 112500000 - Grade: 0.29 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 64.92 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.29 Context: 112.50 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-38) Kitsault Valley · lead Historical result Needs review: historical\_restatement #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:7519063783dbeff07d30 - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 112500000 - Grade: 320.26 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 64.92 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 320.26 Context: 112.50 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-39) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 89.14 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This indicated resource for silver at Homestake contributes to the overall increase in indicated resources, showing good grade and confidence. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: Indicated category provides higher confidence - Positive factor: Strong silver grade for an indicated resource Evidence · table > 89.14 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-40) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 5.63 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This indicated resource for silver at Homestake contributes to the overall increase in indicated resources, showing good grade and confidence. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: Indicated category provides higher confidence - Positive factor: Strong silver grade for an indicated resource Evidence · table > 5.63 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-41) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 0.13 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This indicated resource for silver at Homestake contributes to the overall increase in indicated resources, showing good grade and confidence. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: Indicated category provides higher confidence - Positive factor: Strong silver grade for an indicated resource Evidence · table > 0.13 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-42) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 0.15 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This indicated resource for silver at Homestake contributes to the overall increase in indicated resources, showing good grade and confidence. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: Indicated category provides higher confidence - Positive factor: Strong silver grade for an indicated resource Evidence · table > 0.15 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-43) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:78cae9213b6afff15bd8 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 2140000 - Grade: 0.13 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 483.7 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This indicated resource for silver at Homestake contributes to the overall increase in indicated resources, showing good grade and confidence. \(Expanded from multi-commodity resource table for completeness.\) - Positive factor: Indicated category provides higher confidence - Positive factor: Strong silver grade for an indicated resource Evidence · table > 0.13 Context: 2.14 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-44) Kitsault Valley · silver #### Identity - Project: Kitsault Valley - Commodity: silver - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 53.91 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 53.91 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-45) Kitsault Valley · gold #### Identity - Project: Kitsault Valley - Commodity: gold - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 4.17 - Grade Unit: g/t - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 4.17 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-46) Kitsault Valley · copper #### Identity - Project: Kitsault Valley - Commodity: copper - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 0.04 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.04 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-47) Kitsault Valley · zinc #### Identity - Project: Kitsault Valley - Commodity: zinc - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 0.15 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.15 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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/contango-announces-updated-mineral-resource-estimate-for-kitsault-valley-project--448cc29f-b0ed-42ad-9988-7c0a5204480e#fact-resource-facts-48) Kitsault Valley · lead #### Identity - Project: Kitsault Valley - Commodity: lead - Region: canada\_bc - Reported Region: Northwest British Columbia's Golden Triangle - Ticker: CTGO #### Resource scope - Estimate type: resource - Effective date: 2026-09-11T00:00:00.000Z - Reporting standards: ni\_43\_101, sec\_sk1300 - QP Signed: Yes - Qualified person names: Dave Larimer - Resource group id: resource:fdfc2944ae823ed90ba0 - Deposit or zone: Homestake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 4600000 - Grade: 0.17 - Grade Unit: % - Cutoff Grade: 132 - Cutoff Unit: g/t AgEq #### Prior Estimate - Resource Date: 2026-09-11 #### Metal Equivalent - Metal Eq. Grade: 328.3 - Metal Eq. Unit: g/t AgEq - Assumptions Disclosed: Yes #### Location - CRS: NAD83 / UTM Zone 9N #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The inferred silver resource at Homestake provides potential upside but with lower geological confidence. \(Expanded from multi-commodity resource table for completeness.\) - Negative factor: Inferred category has lower confidence Evidence · table > 0.17 Context: 4.60 #### 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 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **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 ## 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.