# Chesapeake Announces Proprietary Heap Oxidation Technology Updates Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5 Original source: https://www.newsfilecorp.com/release/315365/Chesapeake-Announces-Proprietary-Heap-Oxidation-Technology-Updates Publisher: newsfile Original announcement: 2026-09-22T10:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Chesapeake Gold Corp. - Ticker: CKG - Exchange: Unavailable - Region: Durango, Mexico - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Metallurgy, Resource update - Extracted: 2026-09-22 10:05:13 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Chesapeake Gold Corp. reported progress in its Phase III metallurgical variability testing for the Metates project in Mexico. The results show improved gold and silver recoveries achieved in significantly shorter oxidation times \(90 days vs 180-240 days\) and highlight the potential for further recovery gains using HPGR technology. Reasoning: The announcement reports significant metallurgical progress in Phase III testing, specifically demonstrating improved recoveries for gold and silver within much shorter oxidation cycles, alongside promising HPGR results. - Positive factor: Improved gold and silver recoveries in reduced oxidation time - Positive factor: HPGR testwork shows significant recovery uplift - Positive factor: Massive Intrusive domain reacts well to new procedures - Positive factor: Silver recoveries doubled compared to Phase I Facts used in scoring: 8 ## Classification and evidence **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: Gold and silver recoveries in the Massive Intrusive domain reached 70% and 61% respectively in a 90-day heap oxidation test. Evidence · text > precious metal recoveries achieving 70% for gold and 61% for silver over the shortened 90-day oxidation phase **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The technology involves heap oxidation following crushing/HPGR processes. Evidence · text > proprietary heap oxidation technology **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: Dr. Art Ibrado is named as the independent qualified person responsible for the metallurgical technical information. Evidence · text > Dr. Art Ibrado, P.E., of Fort Lowell Consulting PLLC, is the independent, qualified person responsible for the scientific and metallurgical technical information **Heap Leach Route** Polarity: neutral Definition: Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. Why it applies: the document describes a heap\_leach route \("heap leach"\) **Multi-Domain Tested** Polarity: positive Definition: Variability across ore domains \(oxide, transition, fresh\) has been addressed. Why it applies: 3 distinct composites were tested ## Extracted facts Stored fact records: 8. Some facts used in scoring do not have a stored record. ## Resource Estimates (2) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-resource-facts-6) Metates · silver #### Identity - Project: Metates - Commodity: silver - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:95dec82c474300ae3e7e #### Resource Data - Category: indicated - Tonnes: 921200000 - Grade: 14.3 - Grade Unit: g/t - Contained Metal: 423.2 - Contained Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Baseline resource disclosure provided for context. Evidence · text > 423.2 million ounces of silver at 14.3 g/t within 921.2 million tonnes in the Measured and Indicated Mineral Resource category #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-resource-facts-7) Metates · silver #### Identity - Project: Metates - Commodity: silver - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - Resource group id: resource:9527b886e31d5bbfaae1 #### Resource Data - Category: inferred - Tonnes: 139500000 - Grade: 13.2 - Grade Unit: g/t - Contained Metal: 59 - Contained Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Baseline resource disclosure provided for context. Evidence · text > 59.0 million ounces of silver at 13.2 g/t within 139.5 million tonnes in the Inferred Mineral Resource category #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## Metallurgical Results (6) ### heap oxidation [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-metallurgical-facts-0) Metates · gold #### Identity - Project: Metates - Commodity: gold - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Test Work - Program Status: detailed - Test Type: heap oxidation - Sample: Massive Intrusive domain #### Recovery - Recovery: 70 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: High recovery achieved in a much shorter timeframe than previous phases. - Positive factor: Significant reduction in oxidation time Evidence · text > precious metal recoveries achieving 70% for gold and 61% for silver over the shortened 90-day oxidation phase #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 70% is below the weak band \(80%\) ### heap oxidation [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-metallurgical-facts-1) Metates · silver #### Identity - Project: Metates - Commodity: silver - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Test Work - Program Status: detailed - Test Type: heap oxidation - Sample: Massive Intrusive domain #### Recovery - Recovery: 61 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Strong silver recovery in a shortened cycle. - Positive factor: Silver recoveries doubled compared to Phase I Evidence · text > precious metal recoveries achieving 70% for gold and 61% for silver over the shortened 90-day oxidation phase #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 61% is below the weak band \(75%\) ### heap oxidation [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-metallurgical-facts-2) Metates · gold #### Identity - Project: Metates - Commodity: gold - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Test Work - Program Status: detailed - Test Type: heap oxidation - Sample: Intrusive Breccia domain #### Recovery - Recovery: 57 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Improved performance over previous phases for this domain. - Positive factor: Recoveries increased compared to Phase I Evidence · text > precious metal recoveries increasing to 57% for gold and 60% for silver over a similar 180-day oxidation phase #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 57% is below the weak band \(80%\) ### heap oxidation [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-metallurgical-facts-3) Metates · silver #### Identity - Project: Metates - Commodity: silver - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Test Work - Program Status: detailed - Test Type: heap oxidation - Sample: Intrusive Breccia domain #### Recovery - Recovery: 60 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Significant improvement in silver recovery for the breccia domain. - Positive factor: Recoveries nearly doubled compared to Phase I Evidence · text > precious metal recoveries increasing to 57% for gold and 60% for silver over a similar 180-day oxidation phase #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 60% is below the weak band \(75%\) ### direct cyanidation [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-metallurgical-facts-4) Metates · gold #### Identity - Project: Metates - Commodity: gold - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Test Work - Program Status: detailed - Test Type: direct cyanidation - Sample: HPGR-crushed material #### Recovery - Recovery: 47 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: HPGR shows clear potential to increase baseline recoveries. - Positive factor: Marked improvement over conventional crushing Evidence · text > direct cyanidation of the HPGR-crushed material showed marked improvement over conventional crushing, with gold and silver recoveries increasing by 16% and 23% to 47% and 65%, respectively #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 47% is below the weak band \(80%\) ### direct cyanidation [Link to this fact](https://atlas-extractions.minestarters.com/news/chesapeake-announces-proprietary-heap-oxidation-technology-updates--ce863240-f69a-4d2a-904c-a2969438ced5#fact-metallurgical-facts-5) Metates · silver #### Identity - Project: Metates - Commodity: silver - Region: mexico - Reported Region: Durango, Mexico - Ticker: CKG #### Test Work - Program Status: detailed - Test Type: direct cyanidation - Sample: HPGR-crushed material #### Recovery - Recovery: 65 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Significant silver recovery uplift with HPGR. - Positive factor: Marked improvement over conventional crushing Evidence · text > direct cyanidation of the HPGR-crushed material showed marked improvement over conventional crushing, with gold and silver recoveries increasing by 16% and 23% to 47% and 65%, respectively #### Tags used in scoring **Low Recovery** Polarity: negative Definition: Recovery below the weak band for the commodity and processing route. Why it applies: 65% is below the weak band \(75%\) ## 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.