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Rio Tinto’s Nuton tech makes first-ever copper cathode at Gunnison mine

Blair McBride | December 04, 2025 | 8:08 am Suppliers & Equipment Top Companies USA Copper 

Rio Tinto (NYSE, LSE, ASX: RIO) venture partner Nuton has produced the first copper using new technology at Gunnison Copper’s (TSX: GCU) Johnson Camp Mine (JCM) in Arizona. The Nuton-made copper cathode, produced last month with a unique sulphide bioleaching...

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