Copper retains much of the luster that lent Arizona the unofficial nickname "Copper State," and is king in rural Greenlee County.

Discovered in Arizona’s Copper Triangle, Oak Flat is home to one of the richest copper deposits in the world. But the battle ...

While they’re not mining yet, Resolution Copper is slowly digging its way toward the lucrative ore. In fact, the site is ...

The resulting copper grains are either shipped to a smelter in Miami-Globe or ... suburb that hosts Arizona State University, Tempe. Since the formerly underground mine daylighted in 1937, its ...

Only two U.S. smelters are active — Freeport-McMoRan’s east of Phoenix in Miami, Arizona, and Rio Tinto’s in Utah’s Salt Lake Valley. International mining corporations also ship copper ...

8 hours ago Suspect in Miami sexual battery of a minor ... and regulatory setbacks. — Southern Arizona's proposed Copper World copper-molybdenum mine, formerly known as the Rosemont mine ...

Only two U.S. smelters are active — Freeport-McMoRan’s east of Phoenix in Miami, Arizona, and Rio Tinto’s in Utah’s Salt Lake Valley. International mining corporations also ship copper concentrate ...