Arizona officials said copper has been stolen from mining sites, electrical poles and other sites at higher rates than ever. Here's what to know.

Most copper mined in the U.S. comes from Arizona. But President Donald Trump’s surprise announcement that he will halt ...

Copper was an Arizona mainstay in territorial days when ... But just focus on Pima County. High fences shield the Silverbell Mine, owned by the Asarco subsidiary of Grupo Mexico, just northwest ...

Mining in Arizona:In the 'Copper State,' growing demand for ore raises fears in the fragile Sky Islands Copper World's developers envision at least four open pits across more than 4,000 acres in ...

Here are what girls' coaches from around Arizona think about the new AIA Copper Division playoff format for smaller schools.

Rio Tinto (ASX, LON, NYSE: RIO) said on Wednesday it is very optimistic about US President Donald Trump granting it the final permits for its long-delayed Resolution copper project in Arizona.