Miners sitting atop one of the largest copper deposits on the planet took a step toward production this week when the U.S.

Oak Flat in Arizona is at the center of a struggle that's going on three decades. Here's everything that has happened with the proposed copper mine.

The transfer of federal forest land in Arizona to a pair of international companies that plan to mine one of the largest ...

A federal appeals court has cleared the way for the Trump administration to transfer Oak Flat to a private copper mining ...

In a huge blow to climbing and Indigenous rights, the U.S. Forest Service transferred Oak Flat's 2,422 acres to Resolution Copper.

The U.S. Forest Service transferred ownership of Oak Flat to Resolution Copper on Monday, a major setback for opponents of a massive mine at a site the San Carlos Apache Tribe considers sacred.

Resolution Copper is set to start exploratory drilling at Oak Flat after a long-sought land swap is completed.

Rio Tinto and BHP’s legal win was a milestone in their bid to establish a copper mine in Arizona that has been caught in ...

It’s also one of 60 critical minerals essential to U.S. economic, energy and national security applications, but it has ...

The move facilitates the next stage of work and development planning for the Resolution Copper project.

By Ernest Scheyder March 16 (Reuters) - Rio Tinto said on Monday it has gained control of acreage in Arizona needed to build ...

Arizona Sonoran Copper shares surged Monday morning after Hudbay Minerals said it would acquire the company in full. Shares of Arizona Sonoran rose 21% to 8.69 Canadian dollars ($6.37), hitting a ...