Rio Tinto Kennecott, the world's largest open-pit mine, is now open for visits for the 2025 season. Operating since 1903, this Utah-based open-pit mine has produced over 19 million tons of copper.

Over the past decade, Rio Tinto Kennecott — home to the world’s deepest open pit mine — has taken massive strides in reducing its carbon footprint. Kennecott in 2019 shut down its last coal ...

The first open pit mine at Bisbee was the Sacramento pit comprising ... At 4,000 feet wide from north to south, 5,000 feet long, and 850 feet deep, it was 10 times the size of the former ...

The deepest open pit in the Earth is the Bingham Canyon Mine in Utah, which was dug with excavators and explosives in the early 1900s to mine copper ore. The pit of the mine is 0.75 miles (1.2 ...

The company is revising its plan, including whether to scale back the potential size of the open pit mine, which would produce steelmaking coal. There have been other proposed coal mines in ...

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 ...

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 ...