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materials for coal processing

In surface mining, the ground covering thecoalseam (the overburden) is first removed to expose thecoalseam for extraction. The elements of a surface mining operation are (1) topsoil removal and storage for later use, (2) drilling and blasting the strata overlying thecoalseam, (3) loading and transporting this fragmented overburdenmaterial(called spoil), (4) drilling and blasting the ...

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