WASHINGTON – The U.S. Forest Service transferred Arizona’s Oak Flat to Resolution Copper, advancing a massive mining project ...

An Arizona land auction for a Canadian mining company's Copper World project faces opposition from residents and Pima County.

By Ernest Scheyder HOUSTON, March 24 (Reuters) - Rio Tinto aims to open Arizona's Resolution Copper mine by the mid-2030s but ...

Reporters Dana Hedgpeth and Erin Patrick O’Connor were invited to observe the Sunrise Dance. They spent four days camping in heavy rain and flood waters to document a ceremony that is rarely seen by ...

HILLSBORO — The lonely block house sitting on a hillside beneath Animas Peak near the former Quintana copper mine in Sierra County does not look like a likely location for an imminent industrial boom.