Chilean copper producer Codelco and global miner Rio Tinto will jointly aim to create a copper "mining district" around their ...

A federal judge said the argument over allowing a land swap to proceed "tips sharply" in favor of the opponents of a copper ...

A federal judge has temporarily halted the federal government's plans to transfer land in eastern Arizona for a massive ...

Copper mine foes asked a judge to stop the government from acting on Oak Flat mine plans until Supreme Court rules.

A U.S. federal judge on Friday temporarily blocked the Trump administration from transferring land to Rio Tinto and BHP for a ...

Mining continues at the Continental Pit. Nearby is the Berkeley Pit, a site for acid mine drainage that poses an opportunity ...

A U.S. federal judge on Friday temporarily blocked the Trump administration from transferring Arizona land to Rio Tinto and ...

A U.S. District judge will hear arguments May 7 in a case over whether the federal government can complete a land swap for a ...

Comprehensive surface sampling program: The program consisted of 2,263 soil and 303 rock samples over a 20 km² area around the Yuma King Mine and represents the first systematic property-scale soil ...

The fate of a sacred Native American site near Phoenix hangs in the balance as federal officials move forward with a ...

A trader at Zijin Mining Investment Shanghai Co., a unit of China’s top copper miner, said demand growth for copper has been running at double-digits this year, a pace which cannot continue.