Rio Tinto Clears US$144 Million Resolution Copper Development Program
Rio Tinto announced on November 5, 2026 that it had approved a US$144 million investment by Resolution Copper to advance the Arizona project’s next development phase, with Rio Tinto’s share set at US$79 million. The program will fund feasibility studies and final design engineering for development- and production-level material-handling equipment in both shafts, along with new water-treatment facilities. It will also support continuing exploration drilling and purchases of underground…