Until it was abandoned just a few years ago, an endless stream of diesel trucks carried china clay out of the mine seven ... will face the granite bedrock of the Smreka iron open-pit in Bosnia ...

Mine opponents, however, argue that Donlin puts at risk the Kuskokwim River ecosystem, where salmon stocks have already faltered. “The history and track record of large-scale, open pit sulfide ...

Ongoing extraction inside the Continental Pit operated by Montana Resources — an open pit mine in Butte, Mont. The company is working with researchers at the nearby closed Berkeley Pit ...

As part of this year’s bonding bill, the Minnesota Legislature approved $8.875 million for the construction of an overflow outlet on the Canisteo Mine Pit, a series of abandoned open-pit iron ...