A controversial bill in Costa Rica could designate over 327 square miles of land for open-pit gold mining.  Environmental ...

Kennecott has an operational north tailings impoundment, near Interstate 80. From State Road 201, drivers can see the south impoundment, which hasn’t received active tailings since 2001.

A mine tailings dam in Madagascar has failed at least twice this year, sending hazardous wastewater into a lagoon relied on by locals for drinking and subsistence fishing, and allegedly killing ...

Century-old silver mines are long gone. But tainted tailings are still polluting Park City. Now the feds are suing to clean up the Superfund site. What are now world-class ski runs used to be ...

Tailings - consisting of water, ground rock and chemical byproducts of mining - never quite go away. The same goes for the risk of failure for the slurry's containment dams, experts say on the ...

Now imagine that pit filled with up to 10 billion tons of tailings — waste that’s derived from mining — that will remain there forever. It’s a reality that isn’t exactly far-fetched.

340+ people have died since 2008, communities have been ravaged, rivers contaminated, drinking water polluted, and fisheries ruined by mining tailings dam failures. Future accidents could be ...

Geologists have found a new source for rare earth elements: old mine tailings. Miners pushing ore carts through the tunnels of the Gould and Curry Mine in Virginia City, Nev., in this undated ...

Today, the tailings pile — known as a legacy mine — is only half of what it used to be after a new partnership bought the property in 2005 and last year began trucking about 100,000 tons of ...

US metals refiner Phoenix Tailings plans to pursue an initial public offering within three years after building out plants to ...

The practice of dewatering tailings, however, is still limited to few areas globally. According to Metso’s analysis, only ~5% of tailings generated in 2018 were dewatered into thickened, paste ...

The earthen dam that contains the tailings pond has already reached 6,400 feet elevation in some portions of the wall. At the north end of the pond, the water lies at 6,332 feet elevation.