The Bingham Canyon Mine（宾汉铜矿坑）

By Freelance Chinese Translator Li – English to Chinese translation or Chinese to English translation services - based in Harbin，China.

The Bingham Canyon Mine is an open-pit mining（露天采矿） operation extracting a large porphyry（斑岩） copper deposit southwest of Salt Lake City, Utah , in the Oquirrh Mountains. The mine has been in production since 1906, and has resulted in the creation of a pit over 0.75 miles (1.2 km) deep, 2.5 miles (4 km) wide, and covering 1,900 acres (7.7 km²). According to Kennecott, it is the world's largest man-made excavation（挖掘，坑洞）. It was designated a National Historic Landmark in 1966 under the name Bingham Canyon Open Pit Copper Mine.

宾汉铜矿坑(Bingham Canyon Copper Mine)位于盐湖城西南四十五公里处，山上岩石多呈黄铜色，是美国最出名、最大的铜矿区。这里地势雄伟、蔚为壮观，可与大峡谷媲美。这个露天採矿场，被认为是人类在地球上所挖掘的最大坑洞。自1906年开採以来，坑洞直径已达4公里，深度已达1.2公里。游人可在瞭望台观看爆破场面。