The company is vertically integrating all the way back to raw materials as it competes in artificial intelligence.

Copper mining firm Rio Tinto is partnering with Amazon to provide copper from a southern Arizona mine for the tech giant’s ...

If copper isn’t Arizona’s king, it still looks to be a royal growth industry. Major new mines are in various stages of development or environmental haggling, all intended to exploit the metal’s ...

U.S. copper prices surged due to fears of a 50% tariff on imported copper, but a surprise exemption for raw copper materials caused a sharp market decline, wiping out profits for U.S. miners. A ...

Land in central Arizona known as Oak Flat and holding great spiritual value to the Western Apache Indians is also on the world’s third-largest deposit of copper ore and at the center of court battles.

President Donald Trump directed the Secretary of Commerce this week to investigate the "national security risks" posed by our increasing dependence on imported copper and consider possible ways to ...

CHEYENNE, Wyo. — President Donald Trump is taking a step toward granting the US mining industry’s biggest wishes by singling out one metal as a focus of his domestic minerals policy: copper. From talk ...

Copper has endured as a linchpin of Arizona's economy since the territorial days. Arizona produces three-quarters of America's copper, valued at $6 billion a year, and the industry employs thousands ...

President Donald Trump ordered the Commerce Secretary to investigate the security risks of importing copper and look for ways of producing more at home. Arizona still produces 70% of the nation's ...