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 ...
Nasdaq

Microbial Mining? Endolith Makes Copper Recovery Breakthrough with Bioleaching Tech

Endolith has reported a major advance in copper extraction as it pushes the frontiers of microbial science. In collaboration with BHP’s (ASX:BHP,NYSE:BHP,LSE:BHP) innovation arm, Think & Act ...
Hosted on MSN

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 ...
Seeking Alpha

Copper Leaching Technology Makes Freeport-McMoRan Shares Expensive (For Now)

Freeport-McMoRan's Q3 2023 results demonstrate strong performance and technological leadership in copper extraction. The bull thesis for copper stocks, based on structural shortages, may be challenged ...
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.