12 porphyry | PPT
Bingham Canyon, Utah The Bingham Canyon Mine is an open-pit mining operation extracting a large porphyry copper deposit southwest of Utah, USA. The mine has been in production since 1906, and has resulted in the creation of a pit over 0.6 miles (0.97 km) deep, 2.5 miles (4 km) wide, and covering 1,900 acres (770 ha). 14.
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