Kennecott Bingham Canyon Mine (State of Utah)

The biggest operating pit in the world — development of copper began in 1863 and goes still. About a kilometer in depth and three and a half kilometers in width.
Is the world's largest anthropogenous education (the dug-out person). Represents mine which development it is conducted in the open way.
The ore body of a field is dated for the stolboobrazny rod of the quartz montsonit-porphyries with a diameter of 1800 x 2700 m which has been coolly inclined to the North. Breeds containing it are quartzites and the limestones of late coal age crumpled in folds with hades on wings 20-30 ° and crossed by 20-30 breaks of northeast and northwest pro-deleting. In sedimentary breeds zones of a kalishpatization and quartz-seritsitovogo метасоматоза are developed.
The ore body in a horizontal cut has the sizes of 1200-1500 x 1800-2100 m. Down it is opened with wells up to the depth more than 2 km. In a form the ore body is close to a thick-walled cone top up in which lower part there is a bezrudny kernel. At a depth more than 2 km the ore body is split on a series quickly выклинивающихся апофиз.
Now in career 1400 people who daily take 450000 tons (408 thousand tons) breeds work. Ore is loaded into 64 big dump trucks which are capable to transport on 231 tons of ore, these trucks cost about 3 million US dollars everyone.