Rio has faced a 12-year permitting battle to develop the Resolution mine, which could meet 25% of US domestic copper needs.

Environmental and community groups have appealed the Arizona Department of Environmental Quality’s decision to grant an air ...

Environmentalists and farmers are challenging Arizona's approval of an air pollution permit for Copper World Mine, claiming ...

PHOENIX— Tribal and conservation groups sued the U.S. Forest Service Friday to stop a land trade that would hand over thousands of acres in the Tonto National Forest in central Arizona ... mining ...

Donald Trump's return as US President promises a change in fortune for stalled US mine developments Rio ... Resolution copper project in Arizona. The project, which will take 10 years to build ...

Hudbay Minerals’ (TSX, NYSE: HBM) proposed 85,000-tonne-per-year Copper World project in Arizona is now fully permitted ... from current levels and, with a mine life 20 years in its initial ...

NWC has discovered potentially economic and resource boosting gold at the Antler copper project in Arizona. ... Read More The ...

Hudbay president and CEO Peter Kukielski said: “Cactus is an exciting copper development project in Arizona. We see the US as a tier-1 mining jurisdiction and this investment increases our ...

The return of US President Donald Trump has ASX miners and explorers hopeful it could stoke the development of Arizona's ...