TechCrunch

Ceibo unearths $30M Series B to extract more copper out of existing mines

When it comes time to fret about minerals critical to the energy transition, lithium, cobalt and nickel may get all the attention, but another metal is keeping plenty of analysts up at night. Though ...
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 ...
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. siris_sil_630058 ...
Digi Times

Canada's pH7 Technologies utilizes SolvoMetallurgy technology to build platforms for metal extraction and e-waste recycling

Canada-based startup pH7 Technologies has developed a new chemical process solution that can extract precious and critical metals, mainly platinum-group metals (PGM) from both primary and secondary ...