Nasdaq

Americas Gold and Silver Achieves Breakthrough With 99%+ Antimony Extraction From Its Copper Concentrate, Supporting Potential Primary Production in the United States

These assay results indicate an antimony-to-copper ratio in the tetrahedrite ore that is approximately 0.64-to-1 (versus 0.69-to-1 reflected in the above historical results). Antimony and copper is ...
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Rio Tinto advances Nuton copper processing technology at Johnson Camp mine

Rio Tinto has achieved a milestone with the first copper produced from Gunnison Copper’s Johnson Camp mine in Arizona, US, using Nuton copper processing technology. The Nuton technology, the result of ...
insider.si.edu

The Hunt and Douglas process for extracting copper from its ores : with an appendix including notes on the treatment of silver and gold ores

"Copies of this ... pamphlet may be had by addressing J. Oscar Stewart ... For further information ... address James Douglas ... or T. Sterry Hunt" - p. 39.
MIT Technology Review

This startup wants to clean up the copper industry

Still Bright hopes its chemical process could help replace polluting copper smelters. Demand for copper is surging, as is pollution from its dirty production processes. The founders of one startup, ...
Insider Monkey

How BHP (BHP) Is Using AI to Improve Copper Extraction as Supply Gets Harder to Grow

BHP Group Limited (NYSE:BHP) is one of the best copper stocks to buy for the AI and electrification boom. On June 3, 2026, BHP said it was collaborating with Microsoft and Prescience Insilico to ...