The Bingham Canyon copper mine in Utah, for example, has removed an entire mountain and excavated a pit over 3 kilometers (2 miles) across and 1 kilometer (3300 feet) deep (Fig. 18B). This mine alone has removed billion metric tons of material, an amount seven times greater than was excavated in the building of the Panama Canal.
The Bingham Canyon Mine, more commonly known as Kennecott Copper Mine, is extracting a large porphyry copper deposit southwest of Salt Lake City, Utah, in the Oquirrh Mountains. The mine is the largest manmade excavation in the world and produced more copper than any other mine in history – more than 19 million tons.