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

A federal appellate court has put a temporary hold on development of a copper mine planned for the Superior area. The Ninth Circuit Court o ...

President Donald Trump took a strong stance on Tuesday on the ongoing Resolution Copper dispute, issuing pointed criticism of ...

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

In a separate post, outgoing Rio Tinto CEO Jakob Stausholm said the miners outlined to Trump "the enormous potential of this project to provide domestic copper and other critical minerals for decades ...

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 ...

On Friday, a federal judge in Phoenix seemingly cleared the way for a massive copper mining — until the 9th Circuit suddenly ...

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

The U.S. Court of Appeals for the 9th Circuit said in a brief ruling on Aug. 18 that the Oak Flat site in Pinal County would ...

The 9th U.S. Circuit Court of Appeals issued an emergency injunction on Monday, temporarily blocking the Trump administration ...

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 on Friday denied the latest request by a Native American tribe, environmentalists and other plaintiffs ...