or using mining loaders, low-slung payloaders specialized for operation in tight spaces. Ore plus soap equals metal bubbles. Froth flotation of copper sulfide is similar to the process for ...

While the political playing field has become more favorable for mining, the Republican’s proposals still face hurdles.

ST. PAUL, Minn.―Conservation groups sued the U.S. Army Corps of Engineers today to challenge a key water permit authorizing the PolyMet open-pit copper-sulfide mine to move forward. The mine would ...

of gold. A majority of the production will come from mining the sulfide mineralization at Moonlight-Superior, the company said. US Copper CEO Stephen Dunn said the PEA is “a culmination of ...

After former President Obama issued a mining moratorium in 2016, Donald Trump reversed it during his first term -- and ...

Zinc sulfide concentrate leaching processes are essential for extracting zinc from its ores, particularly in the context of sustainable and efficient mining ... of zinc, copper, and indium from ...