BHP is reportedly considering reopening four long-dormant copper mines in Arizona, a key area of the US copper industry. BHP chief executive Mike Henry highlighted the "breathtaking" shift in US ...

Mitsubishi is putting up nearly $600 million to become a partner in an Arizona copper mine that aims to produce finished ...

The United States has a copper problem. Simply put, the U.S. uses a lot of it and there aren’t enough American mines to pull it out of the ground fast enough. But Ivanhoe Electric is moving toward ...

Trump called those opposing the mine ‘Anti-American’ and said the country needs copper ‘NOW!’ Opponents of the mine, including the San Carlos Apache Tribe, said they will never stop fighting to ...

MAMMOTH, Ariz.—On the banks of the San Pedro River lies one of the American Southwest’s few remaining old-growth mesquite bosques—a streamside forest in more than 3,000 acres of riparian ecosystem ...