description of coal mining in arab
Coal miners extract coal from surface mines and underground mines To do this they operate complex and expensive machinery that drills cuts scrapes or shovels earth and coal so that the fuel can be collected Since coal is hard to reach large portions of earth must be removed from the surface or dug out of mines so the coal miners can get ...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.