From a viewpoint at about 6,190 feet above sea level, a giant hole in the Oquirrh Mountains stretches two and a half miles wide and ¾ of a mile deep. Trucks with tires bigger than a sedan look like ...

One month ago, on September 8, approximately 800,000 tons of mud slid into an underground portion of the Grasberg mine. Located in Indonesia, this is one of the world’s largest copper mines.

Rietberg was an underground operation active in the 1970s. Ore was transported to Nababeep for processing. The mine closed in 1981, owing to the presence of other more economical and closer deposits ...

BOGOTA, Colombia — The bodies of all five miners trapped in a collapsed shaft in the world's biggest underground copper mine for three days have been found and identified, an official said Sunday.

The status of one of the world’s most important copper mines remains clouded in uncertainty, more than a week after seismic activity caused widespread flooding deep below ground. Ivanhoe Mines Ltd.’s ...

MAMMOTH, Ariz.—On the banks of the San Pedro River lies one of the American Southwest’s few remaining old-growth mesquite bosques—a streamside forest in more than 3,000 acres of riparian ecosystem ...

The Prieska copper mine is located on a significant volcanogenic massive sulphide deposit. The fully permitted mine, which last operated in 1991, has a Joint Ore Reserves Committee-compliant resource ...

Harmony Gold is a strong cash flow generator, expanding into copper to diversify beyond its South African gold operations. Recent acquisitions, especially in copper, position Harmony for long-term ...

Copper miners with productive assets have much to gain as supply and demand tighten. In May 2024, the copper price hit a new all-time high of US$10,954 per metric ton (MT) on the London Metal Exchange ...

LANSING, MI - Michigan lawmakers are trying a different route to secure funding for a controversial copper mine in the western Upper Peninsula after grant dollars did not get approved last year. A ...