President Trump this week threw his full support behind a massive project to turn a sacred Apache site outside Phoenix into one of the world's largest copper mines, meeting with mining executives at ...

Copper retains much of the luster that lent Arizona the unofficial nickname "Copper State," and is king in rural Greenlee ...

A U.S. appeals court has temporarily blocked the transfer of federal forest land in Arizona to a pair of international companies that plan to mine one of the largest copper deposits in North America.

A U.S. appeals court has temporarily blocked the transfer of federal forest land in Arizona to a pair of international companies that plan to mine one of the largest copper deposits in North America.

Hudbay Minerals (TSX:HBM,NYSE:HBM) has struck a US$600 million deal with automobile giant Mitsubishi (TSE:8058) for a 30 percent stake in its Copper World project in Arizona, marking one of the ...