Arizona Copper Mines Likely to Reopen as BHP Weighs Options

SEATTLE (Scrap Monster): BHP, the global mining and metals giant, has announced plans to reopen four long-closed copper mines in Arizona, citing recent U.S. policy changes aimed at securing domestic critical mineral supplies and reducing reliance on China.

Resolution Copper, a joint venture between BHP and Rio Tinto, is Arizona’s most significant copper project. The $2 billion development, which has been stalled for over two decades, still requires court approvals and final permits. Once operational, the mine is expected to supply nearly 25% of total U.S. copper demand, the company noted. Rio Tinto has expressed optimism that the Trump administration will grant the necessary approvals to move the project forward.

BHP’s restart plans also include the Globe–Miami region, home to the historic Magma mine, acquired in 1996 through the purchase of Magma Copper. The mine has been inactive since its closure.

With copper emerging as a critical resource for renewable energy and the global shift toward electrification, reopening domestic mines is seen as a key step in strengthening America’s supply chains. According to Wood Mackenzie, global copper demand is projected to surge 24% by 2035, reaching 42.7 million tonnes per annum (Mtpa).