TUCSON, Ariz.— A federal judge today overturned the U.S. Forest Service’s approval of a controversial open-pit copper mine in southern Arizona’s Santa Rita Mountains, citing the agency’s “inherently ...

Environmental and community groups have appealed the Arizona Department of Environmental Quality’s decision to grant an air ...

Arizona Sonoran Copper Company Inc. an emerging U.S. copper developer, is pleased to highlight the significant progress made ...

In issuing the permit Jan. 2, the Arizona Department of Environmental ... the state for construction of the $1.7 billion open-pit complex. The mine would be built in the Santa Rita Mountains ...

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 ...

The North America Copper Mines segment operates open-pit copper mines in Morenci, Bagdad, Safford, Sierrita, Miami in Arizona and Chino, and Tyrone in New Mexico. The South America Mining segment ...