
Measuring two and three-quarter miles across and with a depth of approximately three-quarters of mile, the Bingham Canyon Mine was for many years the largest man-made excavation on Earth. It is from here, southwest of Salt Lake City, Utah, in the Oquirrh Mountains that Rio Tinto Kennecott sources almost a quarter of the total copper needs of the United States.


Kennecott-Americas-Mining-Mar14-Bro-s.pdf





