The classic open-pit mine is impressively deep and far wider at the top than at the bottom. One example is the particularly massive Bingham Canyon mine near Salt Lake City, Utah. It is nearly ...

Rio Tinto Kennecott, the world's largest open-pit mine, is now open for visits for the 2025 season. Operating since 1903, ...

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 ...

“You’re really only dropping maybe 300 or 400 feet deep every time ... of digging what was once the world’s largest open-pit mine. Today it employs more than 2,300 employees, including ...

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 ...