and the first mining in Bingham Canyon was underground, although the vast majority of ore has come from more than a century of digging what was once the world’s largest open-pit mine.

“KSM is on a whole other scale of mining, one of the world’s largest open pit mines, if it’s ever built,” said Guy Archibald, SEITC's director. “Our tribes and communities are directly ...

A Chilean court has suspended construction of what would be one of the world's biggest gold mines on ... The order, which suspends construction of the open-pit mine while the court studies the ...

The Great Lakes region contains nearly 85 percent of North America's surface freshwater, and more than 20 percent of the world's supply of surface freshwater ... Any new heavy-metals mines in ...

Plans for a massive open-pit mine threaten wild salmon and bears at two of Alaska's wildest national ... Lake Clark protects the headwaters of the Kvichak and Nushagak Rivers that flow into Bristol ...

The Charlotte company has been addressing the smell stirred up by its removing water from a dormant lithium pit mine.