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Longwall mining is used for coal mining. A long wall of coal (up to 4 km long and up to 400 meters wide) is mined in a single slice.
In these operations, hydraulic jacks are placed in a long line and the coal is cut by a machine called the shearer (power loader).
Latin America has some of the largest coal mines in the world. AngloAmerican, Glencore and BHP Biliton operate Cerrejón, with estimated resources of 1.961Mt coal.
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