Chesapeake Announces Proprietary Heap Oxidation Technology Updates

Chesapeake Gold reports that tests of its heap oxidation process at Metates, Durango, achieved 70% gold and 61% silver recovery from the main intrusive domain in 90 days, versus 240 days in earlier testing. It is evaluating further improvements for a planned prefeasibility study and testing the process on six third-party projects.

Mammoth Provides Update On Field Activities at its Tenoriba Gold-Silver Property, Mexico

Mammoth Resources has collected a 200 kg metallurgical sample from the Carneritos area of its Tenoriba gold-silver project in Chihuahua. The sample will undergo vat and column leach testing at the Universidad de Sonora to assess recovery options for potential small-scale production. The company also reviewed drill core, site access and plans to renew surface access agreements.

GoGold Advances Los Ricos South Construction

GoGold reports that construction at Los Ricos South in Jalisco remains on schedule for first silver production in the second quarter of 2028. More than 150 contractors are on site, plant design is 90% complete, and all long lead equipment has been ordered. The company says the project is fully funded.

ANT Commences Trading as Tecomatlán Advances Toward Commissioning

Antimony Resources commenced ASX trading under ticker ANT following its name change from EV Resources. At the Tecomatlán antimony processing plant in Mexico, crushing for the proof-of-concept campaign is underway, with material being stockpiled ahead of grinding and flotation as the company advances toward full commissioning.

Heliostar Provides Progress Update on Ana Paula Feasibility Study

Heliostar reported that the Ana Paula feasibility study is 34% complete and remains scheduled for Q2 2027. An updated resource estimate and metallurgical work are nearing completion, with permitting advancing without material delays. The company targets a mid-2027 construction decision and first gold production before year-end 2028.

Americas Gold and Silver Announces Some of the Best Grade-Widths Drilled to Date at the Cosala Complex Including High-Grade Drill Results of 654.7 g/t Ag, 1.5% Cu over 20.5 Meters and 409.3 g/t Ag, 0.8% Cu over 14.1 Meters

Americas Gold and Silver reported strong Cosalá drill results, including 20.5 metres grading 654.7 g/t silver and 1.5% copper, and 14.1 metres grading 409.3 g/t silver and 0.8% copper. Grades averaged two to three times existing inferred resources, supporting potential resource growth and improved mine planning.

Kootenay Reports Drill Results as 60,000-Meter Columba Program Advances

Kootenay Silver expanded the D Vein at Columba to approximately 1,320 metres of strike and 600 metres depth. Highlights include 6.28 metres grading 274 g/t silver and 17 metres grading 178 g/t silver. The 60,000-metre program has completed 29,700 metres, with results reported for 42 holes and 14 awaiting assays.

Aztec Minerals Announces Closing of Upsized C$6.4 Million Bought Deal Private Placement Including Concurrent Exercise of Underwriter’s Option

Aztec Minerals closed an upsized C$6.4 million bought deal private placement, selling 20.01 million units at C$0.32 each. The total includes full exercise of the underwriter’s option. Aztec plans to use the proceeds for exploration at its Tombstone project in Arizona and Cervantes gold-copper project in Sonora, and for working capital.

Endeavour Silver Reports Temporary Reduced Capacity at its Guanacevi Mine

Endeavour Silver has taken the primary ball mill at its Guanaceví mine offline for repairs expected to take about three weeks. During that period, processing capacity will fall from approximately 1,100 to 600 tonnes per day. Mining will continue uninterrupted, and replacement parts are already on site.

Apollo Silver Clarifies Media Reports Regarding Ejido Benito Juárez Assembly

Apollo Silver disputes reports that Ejido Benito Juárez voted to reaffirm its 2012 mining moratorium. The company says the September 20 assembly was adjourned for lack of quorum, leaving the proposed lifting of the moratorium and access agreement for its Cinco de Mayo project undecided. Apollo expects the ejido to reconvene, likely in October.

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Chesapeake Announces Proprietary Heap Oxidation Technology Updates

Chesapeake Gold reports that tests of its heap oxidation process at Metates, Durango, achieved 70% gold and 61% silver recovery from the main intrusive domain in 90 days, versus 240 days in earlier testing. It is evaluating further improvements for a planned prefeasibility study and testing the process on six third-party projects.

Mammoth Provides Update On Field Activities at its Tenoriba Gold-Silver Property, Mexico

Mammoth Resources has collected a 200 kg metallurgical sample from the Carneritos area of its Tenoriba gold-silver project in Chihuahua. The sample will undergo vat and column leach testing at the Universidad de Sonora to assess recovery options for potential small-scale production. The company also reviewed drill core, site access and plans to renew surface access agreements.

GoGold Advances Los Ricos South Construction

GoGold reports that construction at Los Ricos South in Jalisco remains on schedule for first silver production in the second quarter of 2028. More than 150 contractors are on site, plant design is 90% complete, and all long lead equipment has been ordered. The company says the project is fully funded.

Aztec Minerals Announces Closing of Upsized C$6.4 Million Bought Deal Private Placement Including Concurrent Exercise of Underwriter’s Option

Aztec Minerals closed an upsized C$6.4 million bought deal private placement, selling 20.01 million units at C$0.32 each. The total includes full exercise of the underwriter’s option. Aztec plans to use the proceeds for exploration at its Tombstone project in Arizona and Cervantes gold-copper project in Sonora, and for working capital.

Endeavour Silver Reports Temporary Reduced Capacity at its Guanacevi Mine

Endeavour Silver has taken the primary ball mill at its Guanaceví mine offline for repairs expected to take about three weeks. During that period, processing capacity will fall from approximately 1,100 to 600 tonnes per day. Mining will continue uninterrupted, and replacement parts are already on site.

Apollo Silver Clarifies Media Reports Regarding Ejido Benito Juárez Assembly

Apollo Silver disputes reports that Ejido Benito Juárez voted to reaffirm its 2012 mining moratorium. The company says the September 20 assembly was adjourned for lack of quorum, leaving the proposed lifting of the moratorium and access agreement for its Cinco de Mayo project undecided. Apollo expects the ejido to reconvene, likely in October.

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