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.

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

Who do Democrats want to be their standard bearer in the special election this summer to replace ardent environmental ...

It teamed up with Canada's Lundin Mining in the $3.25-billion buyout of Filo, with the aim of developing two copper mines along the Andes mountains bordering Chile. The re-entry of one of the ...

Southern Arizona Democrats running for late Congressman Raúl Grijalva’s House seat sought to differentiate themselves in a ...

The winner of the July Democratic primary will take a huge voter-registration lead into the general election in CD7, the seat ...

High-profile Democratic congressional candidates Adelita Grijalva and Daniel Hernandez Jr. clashed over tax and environmental ...

The U.S. Supreme Court has turned down a request by Apache Stronghold to hear a case over a proposed copper mine at Oak Flat.

The justices left in place a lower-court decision that allows the transfer of land in central Arizona known as Oak Flat that ...