Gunnison Copper reports breakthrough sorting results that could greatly boost project economics

Gunnison Copper Corp CEO Stephen Twyerould joined Steve Darling from Proactive to share promising results from the company’s initial mineralized material sorting test program at its flagship Gunnison Copper Project in southeast Arizona—one of the largest and most advanced copper development projects in the United States. The test program analyzed a half-ton sample of PQ drill core collected from the Martin Formation during Gunnison’s recently completed metallurgical drilling campaign. The Martin Formation represents approximately 44% of the Gunnison resource base and is known as the deposit’s highest acid-consuming rock type. The sample—made up of roughly 54% mineralized material and 46% internal waste—was selected to reflect the overall material characteristics of this formation. Twyerould described the results as “extremely encouraging,” noting their potential to significantly reduce acid consumption while maintaining high copper recovery rates—two critical factors for the project’s economics. These findings will directly support the company’s forthcoming updated preliminary economic assessment and planned pre-feasibility study. According to the company, more than 90% of the internal acid-consuming waste was successfully removed from the mineralized material using commercial-scale optical sorting equipment. This waste rejection is expected to lower acid consumption by as much as fourfold while maintaining metal recovery performance. Importantly, less than 1% of the total copper content was lost to the waste stream, ensuring that copper recovery—and potential revenue—remains strong. Twyerould emphasized that this breakthrough could meaningfully improve the project’s operating costs, environmental profile, and overall financial returns, reinforcing Gunnison Copper’s position as a leading development-stage copper asset in the United States. #proactiveinvestors #gunnisoncoppercorp #tsx #gcu #otcqb #gcumf r #CopperMining #USMining #CopperProject #MiningInvestment #CommodityMarkets #CopperProduction #ArizonaMining #ResourceDevelopment #MiningStocks #CopperDemand #MetalsAndMining