Resolution Copper Mining approves $144m investment in Arizona project

Mining Weekly Audio Articles · Nov 6, 2026 · 2m

This audio is brought to you by Endress and Hauser, a global leader in process and laboratory measurement technology, offering a broad portfolio of instruments, solutions and services for industrial process measurement and automation.

Resolution Copper Mining, a joint venture between Australia-headquartered miners Rio Tinto and BHP, has approved a $144-million investment in the next phase of development at the Resolution Copper project, in Arizona, in the US – one of the world's largest untapped copper deposits and a potential major new source of domestically produced copper for the US.

The…