Copper mining

A reclamation plan for a proposed new copper open-pit mine’s site on the western slope of the Santa Rita Mountains south of Tucson has received state approval over opponents’ objections that Hudbay Minerals Inc. didn’t address major issues.

The U.S. Forest Service has halted a controversial land exchange in Arizona that would pave the way for one of the largest copper mines in the country.…

The Tonto National Forest is moving ahead with a controversial federal land exchange. KNAU’s Ryan Heinsius reports, it would pave the way for one of…

The U.S. Forest Service plans to begin a controversial land swap Friday that’ll pave the way for a copper mine in central Arizona that'll be one of the…

A tribal group in Arizona has filed a lien and temporary restraining order to try to block a federal land exchange. They say a proposed copper mine…

The Trump administration will begin the final steps of a controversial land swap with a mining company in Arizona in a little more than a week. The Oak…

A controversial federal land exchange to build a copper mine on the Tonto National Forest could take place a year ahead of schedule. It’s one of several…

Federal authorities say a copper-producing company has been fined $33,000 for failing to comply with a U.S. Environmental Protection Agency settlement…

A federal judge in Tucson has overturned the U.S. Fish and Wildlife Service’s approval of plans for a new copper mine in southeastern Arizona.The $1.9…

Mining company Freeport-McMoRan has purchased 16,000 acres in western Yavapai County to be used for storing rock and tailings from its nearby open-pit…