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A coalmining auger having (a) a hollow, tubular auger head with a spiral or helical coal conveyor mounted therein in concentric relation to the axis of rotation of ...
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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: method for recovering coal by boring into a coal seam at the base of strata exposed by excavation. Normally one of the lowestcost techniques of mining ...
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Mining is the extraction of valuable minerals or other geological materials from the earth usually from an orebody, lode, vein, seam, reef or placer deposits.
Mar 29, 2011· Open Pit Coal Mine Stellarton, NS
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