A U.S. appeals court has put the brakes on the transfer of federal forest land in Arizona to a company that plans to mine one ...

Two of the world's largest mining firms, Rio Tinto and BHP have been trying to develop Resolution Copper for roughly two ...

President Trump signaled support for a giant copper mine in Arizona following a meeting with the heads of two of the world’s ...

Arizona tribal leaders reacted angrily after President Donald Trump said their opposition to a copper mine was un-American.

President Trump calls court blocking of Arizona copper mine project 'anti-American' as 9th Circuit temporarily halts land ...

Hours before a disputed land swap was to take effect, an appeals court halted the process, giving copper mine opponents more ...

A U.S. district judge has denied a request by a Native American tribe and environmentalists to stop the federal government ...

A federal land swap will have to wait as another legal challenge to a controversial Arizona copper mine makes its way through ...

BHP and Rio Tinto chiefs affirmed their commitment to the Resolution project at the meeting. Henry said in a statement ...

The Copper World mining project south of Tucson reaped a big financial boost Wednesday: Japan-based Mitsubishi Corp. will ...

Arizona is ranked the No. 1 state in copper production and No. 5 for sand and gravel production, he said. In addition to copper, he said gold and other mines in the state are expanding, offering ...