The proposed Resolution Copper Mine, which is believed to host one of the biggest copper deposits in the world, is a project that has consumed already $1.2 billion of Rio’s and BHP’s capital.

Fall Planning Key During Demolition of Historic Copper Smelter ... The smaller chimney was constructed of 3,200 cubic yards of concrete and 378 tons of rebar with walls 33 inches thick at the ...

A smelter in east-central Arizona has been shut down after molten copper breached a processing vessel, causing a fire and explosions but no reported injuries, company officials said Thursday.

The industry will need to overcome high energy and labor costs, environmental regulations and a glut of cheap Chinese ...

An amazing sight in the Pinal County mining town of Superior over the weekend, as a piece of history came down. Magma Copper smelter’s chimney stack was safely and successfully demolished on ...

Asarco, first bought by Grupo Mexico in 1999, is in negotiations with unionized workers to restart the Hayden smelter in Arizona and nearby copper mines, ... (161 km) southwest of Phoenix, ...