Resolution Copper has selected Major Drilling America and Redpath USA Corporation for contracts totalling around $110m as part of efforts to develop its proposed underground copper mine in Arizona.

SUPERIOR, Ariz., Aug. 7, 2026 /PRNewswire/ -- Resolution Copper has awarded approximately $110 million in contracts to Major Drilling America Inc. and Redpath USA Corporation to advance exploration ...

The U.S. Forest Service has finalized a long-contested land exchange with Resolution Copper, clearing a major hurdle for development of one of the world’s largest undeveloped copper deposits. The ...

HOUSTON, March 24 (Reuters) - Rio Tinto aims to open Arizona's Resolution Copper mine ⁠by ⁠the mid-2030s but may need to export some of ⁠its copper concentrate due to the challenging economics of ...

March 16 (Reuters) - Rio Tinto said on Monday it has ⁠gained ⁠control of acreage in Arizona needed ⁠to build the Resolution Copper mine, a project slated to become one of the largest U.S. sources of ...

With the U.S. Supreme Court declining to hear a last-ditch appeal, a long-planned Arizona copper mine could break ground in early 2026 and, once fully operational, supply up to 25 percent of the ...

SUPERIOR, Ariz., Nov. 5, 2025 /PRNewswire/ -- Resolution Copper has reached a major milestone with the completion of its multi-year, $200 million rehabilitation and deepening of the historic No. 9 ...

Opponents have filed a new lawsuit to block a land exchange for the Resolution Copper mine. The lawsuit argues the mine will destroy Oak Flat, a site sacred to Indigenous people. Advocates say there ...