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

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

Hudbay Minerals said on Wednesday Mitsubishi Corp will buy a 30 per cent stake in its Copper World project in Arizona for ...

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

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 ...

Drilling by Intrepid Metals (TSXV: INTR) in the Earp zone at its Corral copper project in southeast Arizona has returned ...

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 ...

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

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 ...

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

The US$600-million deal consists of US$420-million for a 30% equity interest in the project at closing and US$180-million ...