"We will be a sacrifice zone in every sense of that term." Locals fear new massive mining project will have devastating ...

Most copper mined in the U.S. comes from Arizona. But President Donald Trump’s surprise announcement that he will halt ...

A northern Arizona man is facing a slew of charges after his drone crashed into a uranium mine operation outside Grand Canyon ...

Arizona's Republican Senate president is hoping the Trump administration will undo actions by former presidents that curtail ...

The company that owns a uranium mine near the South Rim of the Grand Canyon has resumed trucking ore from the site. It ...

In one of his first secretarial orders, Doug Burgum ordered staff to review public lands with an eye toward opening them to ...

Freeport-McMoRan has a mining location south of Tucson near Sahuarita and a technology center in Tucson. The company has worked with Sahuarita Unified School District, supporting students to ...

KGUN 9's Pat Parris explores the legend of the Lost Dutchman Mine in the Superstition Mountains. It's a tale of a search for gold that's never been found--a tale that's Absolutely Arizona.

Two environmental groups are suing the U.S. Environmental Protection Agency over what they say are air-pollution problems with a zinc mine in the Patagonia Mountains of southern Arizona.

The Center for Biological Diversity and the Patagonia Area Resource Alliance say federal regulators failed to review a petition against Hermosa Mine.