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

Federal appeals court blocks Oak Flat transfer to Resolution Copper with emergency injunction protecting Apache site ...

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

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

Conservation and tribal groups were successful in their bid to further delay the transfer of public land for a copper mine in ...

Deal hands Mitsubishi a 30% stake in Hudbay's Copper World project, sharply reducing its upfront funding needs.

A colossal copper mine that could pump billions into the Arizona economy is charging ahead, after nearly a decade of Washington roadblocks. In a rush of votes Friday, the Senate passed the measure ...

Executives of two of the world’s biggest mining companies, BHP and Rio Tinto, have lobbied at the White House as part of ...