The underground mine is situated in Arizona’s Copper Triangle, about 60 miles east of Phoenix.

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 ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. A worker at the Resolution Copper mine inspects an underground tunnel. As artificial ...

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 Resolution Copper mine in Arizona plans to use a large amount of groundwater, potentially jeopardizing the planned Superstition Vistas development and its water supply. Arizona law allows mining ...

In a news release issued March 16, the U.S. Department of Agriculture’s Forest Service says it has completed the Southeast Arizona Land Exchange and issued the final record of decision for the ...

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 ...

Resolution Copper has awarded about $110 million in contracts to two U.S. companies for exploration and underground ...

Add Yahoo as a preferred source to see more of our stories on Google. . Wendsler Nosie has led the fight to protect Oak Flats for almost a decade. (Photo/Apache Stronghold) Guest Opinion. Arizona is ...