coal sampling
... coal recoverey drill 螺旋采煤机 coal sampling 煤炭取样 coal seam 煤层 ...
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针对南桐矿业公司目前堆积在矸石山的煤矸石等煤炭固体废弃物进行取样分析，并根据其性质提出可有效利用的途经。
Based on analyzing of coal solid wastes such as refuse in heaps of Nantong Mining Corporation Ltd., this paper puts forward effective utilizing measure according to the property.
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