Two Alberta environmental groups are praising Premier Danielle Smith’s comments on banning open-pit mining, just days after ...

Mining resumed in the 1970s, when Earth Resources Corporation established an open-pit mine, into the late 1990s. Continue reading If approved, the future DeLamar mine would also be an open-pit mine.

We just need to do it a little faster." Rio Tinto’s Kennecott mine, just west of Salt Lake City, is the largest open-pit mine in the world, spanning 2.5 miles across and about 4,000 feet deep.

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 ...

Over the decades, Grasberg has evolved from an open-pit mine into one of the most advanced underground mining networks in the world. Initially, the mine’s signature feature was a mile-wide open ...

Deep in the Mojave National Preserve lies an old open pit mine where workers dug and drilled for gold and silver from the late 1800s to the 1990s. Miners are back at the Colosseum Mine today ...

The Trump administration has selected a proposed open pit copper-nickel mine in northern Minnesota for a fast-tracked permitting process. On Friday, the Trump administration announced a list of ...

Ukrainian legislators have unanimously voted to ratify a minerals deal with the United States in the hope of securing military assistance to deter future Russian aggression. The country’s ...

About 200 activists demonstrated this Sunday in the capital of Panama against the possible reopening of the largest open-pit mine in Central America, owned by a Canadian company, which was shut down ...

Miners in DeLamar in the late 1800s. A Canadian mining company hopes to revive gold and silver mining operations there. Idaho State Historical Society A Canadian mining company earlier this month ...