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At the Berkeley Pit, researchers hope to extract valuable metals to increase U.S. production of rare earths used in electric ...

Discover the haunting story behind the Berkeley Pit in Butte, Montana—a former open-pit copper mine that has turned into one ...

Butte, Mont ... and it’s called cementation. Montana Resources, the mining company that took over from the Anaconda Copper Co., still uses this alchemical trick in a process at its Continental ...

The Berkeley Pit in Butte, Montana, has been a source of environmental concern for decades, as its waters—highly acidic and ...

“I am very excited to join the team at Domestic,” says Gordon Neal. “The increasing global demand for copper has been reflected in the rising price of the commodity. Add to this the current US ...

WVU Water Research Institute Director Dr. Paul Ziemkiewicz said the rare earth recovery project has included the construction of a new acid mine drainage treatment plant near Mount Storm in Grant ...

Production and sale of copper concentrate, containing gold and silver by-products from the Group's 100% owned DeGrussa Copper Operations in Western Australia; Production and sale of copper, zinc ...

Eventually, mining and smelting faded. The mighty Anaconda Company, that at one time all but ruled the state of Montana ... that copper mining and smelting was a losing proposition, closing the ...