(Reuters) - Rio Tinto Ltd said on Monday it would invest an extra $302 million to develop its Resolution copper project in the U.S. state of Arizona, as it looks to expands output to meet the ...

(Reuters) - The full 9th U.S. Circuit Court of Appeals said on Thursday it will weigh whether the federal government improperly gave Rio Tinto Plc thousands of acres in Arizona for its Resolution ...

Multi-year agreement comes at a critical time when there is a record demand for food in the Copper Triangle, among Tribal Communities, and in the East Valley SUPERIOR, Ariz., Feb. 6, 2026 /PRNewswire/ ...