Nine Arizona companies had enough revenue to make the 2025 Fortune 500. Copper-miner Freeport-McMoRan leads the Arizona ...

The Morenci Mine is the largest copper mine in the US and one of the biggest in the world. As of 2007, operations ran around ...

KGUN 9's Pat Parris explores the 'Legend of the Iron Door Mine,' and tells us what makes this legend Absolutely Arizona.

Rio Tinto Kennecott, the world's largest open-pit mine, is now open for visits for the 2025 season. Operating since 1903, this Utah-based open-pit mine has produced over 19 million tons of copper.

EPA's ruling won't stop construction of the Hermosa Mine, which began last fall near Patagonia in Southern Arizona.

With SAM registration in place, Liberty Star is now eligible to compete for federal grants and contracts across multiple ...

Democratic hopefuls for Tucson open congressional seat debate, TUSD calls for and election and Mayor Regina Romero talks ...

Arizona is an outdoor lover's paradise, and this town, located along the Copper Corridor, is filled with canyon trails, wild ...

Talon Metals is partnering with Westmoreland Coal to build the “Beulah Minerals Processing Facility” on a 256 acre portions ...