Release Time：2017-05-23 17:42:23
Open mining is to exploit rock or minerals from the land surface. The result is that a huge visible scar is appeared on the surface of the earth.
1、Milne, Russian Milne -- is an inactive diamond mine in Milne, East Siberia. It is the world's largest diamond strip mine and the world's second largest hole with the size of 525 meters (1722 ft) deep, 1200 meters in diameter (3900 ft). 2、The Pennham Canyon Mine in America - Bingham Canyon Mine is also known as the open pit minebCopper Mine whihc is an located in Salt Lake City southwest, Utah. There is the world's largest and deepest digging hole: 0.6 miles (0.97 km) wide and 2.5 miles (4 km). 3、Calgary super pit (super pit gold mine), Australia - the largest digging gold mine in Australia. The pit is in rectangle with the size about 3.5 km long, 1.5 km wide and 570 m deep. 4、Large hole (Kimberley mine), South Africa - is an open-air and underground mine in Kimberley, South Africa.It was opened in 1871 and closed in 1914. During its life of 44 years, the yield of nearly 3 tons of diamonds and 22.5 million tons gold was exploited out by 50000 workers with hoes and shovels. About the pit, the width is 463 m (1519 ft), the depth is 240 m (790 ft), but partially filled debris is reduced by a depth of about 215 m (705 ft). Since then, accumulated holes of about 40 meters (130 ft), 175 meters (574 ft) are clearly visible. 5、Davek Diamond, Canada - An active diamond mine which has become the important part of the regional economy. 700 workers are employed and 1500 kilograms (3300 pounds) of diamonds is exploited. It is located in a 20 square kilometers island, which is frozen around in the winter. 6、Canada Ekati Diamond Mine - Canada's greatest strip mine and underground diamond mine. It is located in Yellowknife of the 310 km (190 miles) northeast direction. The Arctic Circle is about 200 km (120 miles) away from it. 7、Glasgow Copper Mine, Indonesia - the world's largest gold mine and the third largest copper mine, which is opened in 1973 and employs 19,500 workers. 8、Chuquicamata(Chuqui), Peru -- the biggest copper spit mine in the world. Is is also the second deepest digging pit in the world with the depth of 850 meters (2790 ft). 9、Russian diamond mine, Russia - it is the largest diamond mine in Russia and in the world. A part of this mine is located in the northeastern Sakha Republic. The estimates reserves of this mine is 225.8 million carats of diamonds and 10.4 million karats annually. 10、Escondido Copper Mine, Chile - Escondido Copper Mine is a copper mine located in the Antofagasta Atacama Desert area, Chile. Actually, it includes two opencast mines. It is opened in 1990 with the annual capacity of exceed 1 million tons of copper and a record of 1.48 tons in 2007.