Bingham canyon copper mine Kennecott Copper's Bingham Canyon Mine from a commercial aircraft in December with snow cover. The mine is the world's largest man-made excavation. Located 28 miles southwest of Salt Lake City, the mine is 2 3/4-miles across and 3/4-mile deep. It is so big that it can be seen from outer space. You can see better detail in the large size.
Kennecott Copper mines bull's-eye in the Oquirrh Mountains stretches two and a half miles wide and more than half a mile deep - the nation's largest open-pit copper mine, and its most productive." From article Utah's Shining Oasis by Charles McCarry, photographs by James L. Amos 1975