Rio Tinto agreed to pay $138.75 million to resolve a class-action lawsuit that alleged the company concealed problems during the expansion of a giant copper mine in Mongolia.

Rio Tinto Kennecott, the world's largest open-pit mine, is now open for visits for the 2025 season. Operating since 1903, this Utah-based open-pit mine has produced over 19 million tons of copper.

The U.S. Forest Service on Monday released a long-awaited environmental report for the Rio Tinto-led (NYSE:RIO) Resolution ...

The US Forest Service was temporarily barred from transferring land to Rio Tinto Corp. for a copper mine in Arizona Monday ...

BINGHAM CANYON — Nine months after announcing a return to underground copper mining operations ... two priorities Rio Tinto has as the second-largest copper producer in the United States.

SANTIAGO (Reuters) -Chilean copper producer Codelco and global miner Rio Tinto will jointly aim to create a copper "mining district ... Codelco, the world's biggest copper producer, noted that ...