A planned copper mine could alter Tucson's natural skyline, but in the 'Copper State,' mining interests still hold sway.

Five of the nation’s biggest copper mines are in Arizona, all run by Freeport-McMoRan. The Morenci open-pit complex in Greenlee County – continuously operated since 1939 – is the largest in ...

A proposed Michigan copper mine on the shores of Lake Superior is sparking fierce debate over environmental and economic priorities, as the state's House Appropriations Committee approved $50 ...

ACG Metals (LSE: ACG), founded by a mining executive who helped create aluminum giant Rusal, plans to raise $200 million in bonds to help fund the Turkish copper mine it bought in July.

Muscat – Minerals Development Oman (MDO), the sultanate’s flagship mining company, marked a major milestone on Tuesday with the first shipment of copper concentrates exported from the Lasail mine in ...

copper and molybdenum. The company’s extensive list of assets includes significant mining operations like the Morenci mineral district in Arizona, the Cerro Verde operation in South America and ...

Montana’s highest court upheld the Department of Natural Resources and Conservation permit for the Black Butte Copper Mine. Now the project can proceed as planned. Montana Trout Unlimited ...

In the evolving landscape of copper mining, deposits are increasingly challenging to locate and extract. As deposits are found deeper underground, accessing these resources becomes more costly and ...

Gunnison is the owner and operator of the mine which has a production capacity of up to 25 million pounds of copper cathode per year to directly supply critical American supply chains in the clean ...