Rio Tinto approves $144 million investment to advance Resolution Copper project
SUPERIOR, Arizona--(BUSINESS WIRE)--Rio Tinto has approved a $144 million investment by Resolution Copper (Rio Tinto share: $79 million) to advance the next phase of development at the project in Arizona, one of the world’s largest untapped copper deposits and a potential major new source of domestically produced copper for the United States. The investment builds on the completion of the historic land exchange in March 2026, which unlocked the project’s next phase. It is additional to approxim