A U.S. district judge in Arizona has precluded the U.S. Forest Service from proceeding with the land exchange for the huge Oak Flat copper mine project until 60 days after ...

ISKUT, British Columbia (AP) — Three workers who were trapped at a gold and copper mine in Western Canada have been rescued after more than 60 hours underground.

The Morenci open pit mine and the topography of the Arizona Transition Zone, with Morenci’s two 600-foot-high smelter stacks at left.