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auger mining (coal mining) -- Encyclopedia Britannica auger mining, method for recovering coal by boring into a coal seam at the base of strata exposed by excavation.
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auger mining (coal mining) -- Encyclopedia Britannica. auger mining, method for recovering coal by boring into a coal seam at the base of strata exposed by excavation.
coal mining: extraction of coal deposits from the surface of Earth and from underground.
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auger mining | coal mining | Encyclopedia Britannica. auger mining, method for recovering coal by boring into a coal seam at the base of strata exposed by excavation.
Auger mining is a surface mining technique used to recover additional coal from a seam located behind a highwall produced either by stripping or open-pit mining.
Energy and Environmental Profile of the U.S. Mining Industry 2 Coal Coal is a mixture of organic mineral material produced by a natural process of growth and decay,
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Coal Mining Technologies. Coal mining employs surface and underground methods to extract coal. A number of alternative technologies are associated with each method.
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