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Longwall Retreating Methodlongwater Gravel Delivery Charges

采矿专业词汇_百度文库 - baidu,柱式系统 longwall mining on strike 走向长壁采煤方法 mining in advance / wall advancing mining 前进式采煤方法 mining in retreat / wall retreating mining 后退式采煤方法 inclined longwall mining 倾斜长壁开采 underhand mining 俯采 overhand mining 仰采 coal mining machine, coal-getting machine 采煤机; shearer.geology books online problem solving: 'glossary of geology,a. a charge that is divided into several separate components along a quarry borehole. cf:columnar charge b. a charge separated by stemming. carson, 1 decke see:nappe decking a. the operation of changing the tubs on a cage at top and bottom of a shaft. also called caging. fay b. separating charges of explosives by inert material and placing a.research channel | home,the project entails the delivery and assembly of a ccpp at the Żerań combined heat and power plant. longitudinal long-hole open stoping in each zone will proceed in a retreating pattern from the strike extent of ore to a common access point on all levels. the project entails the upgrade of the gravel road between the r27 and the r399.geology books online problem solving: 'glossary of geology,the grinding of a charge of mineral (dry or wet) in a closed ball mill. pryor, 3 batch house the place where batch materials are received, handled, weighed, and mixed, for delivery to melting units. astm batch mill a grinding mill, usually cylindrical, into which a charge of ore and water is placed and is ground to completion of the required.

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