The transfer of federal forest land in Arizona to a pair of international companies that plan to mine one of the largest ...

Tucson's history began with a Spanish fort, the Presidio San Agustín del Tucson, built in 1775, then almost lost.

Resolution Copper is set to start exploratory drilling at Oak Flat after a long-sought land swap is completed.

By Ernest Scheyder March 16 (Reuters) - Rio Tinto said on Monday it has gained control of acreage in Arizona needed to build ...

The U.S. Forest Service transferred ownership of Oak Flat to Resolution Copper on Monday, a major setback for opponents of a massive mine at a site the San Carlos Apache Tribe considers sacred.

WASHINGTON – The U.S. Forest Service transferred Arizona’s Oak Flat to Resolution Copper, advancing a massive mining project opposed by tribes and environmentalists. Supporters say it boosts domestic ...