auger mining for riversand



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Auger Mining For Riversand - greenrevolutionorgin
Auger Mining For Riversand - greenrevolutionorgin

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 Normally one of the lowest-cost techniques of mining, it is limited to horizontal or slightly pitched seams that have been exposed by geologic erosion

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