Located 28 miles southeast of Tucson in the moderately rugged 6,000-foot north end of the Santa Ritas, the Helvetia-Rosemont Mining District has played an integral role in Arizona’s copper ...

Last time this column covered Arizona’s “Five Cs” that underpin our economy. The first, biggest, and most important of the Cs ...

Giant Mining Corp ( ($TSE:BFG) ) has provided an announcement. Giant Mining Corp has announced the expansion of its exploration program at the ...

The company agreed to pay $138.75 million to resolve a class-action lawsuit that alleged the company concealed problems ...

Rio Tinto agreed to pay $138.75 million to resolve a class-action lawsuit that alleged the company concealed problems during the expansion of a giant copper mine in Mongolia.

The Escondida mine, in Chile. (Bloomberg) -- Workers at the world’s biggest copper mine voted to strike, overwhelmingly rejecting owner BHP Group’s final wage offer, in a move that will stoke ...

A federal judge in Phoenix denied two motions that sought to halt a land swap for a huge copper mine at Oak Flat, a site east of Phoenix. A different judge blocked the government from issuing its ...

A federal judge in Phoenix denied two motions that sought to halt a land swap for a huge copper mine at Oak Flat, a site east of Phoenix. Although the injunctions were denied, the judge set a ...

Sulphide leaching could, in some cases, be an alternative to building copper mines from scratch. High costs, slow permitting and local opposition often keep companies from pulling the trigger on ...