Thin Seam Mining Complex by Jiang Jin (1 results)

paperback. Condition: New. Paperback. Pub Date :2014-01-01 Pages: 198 Language: Chinese Publisher: Coal Industry Press for tuberculosis and iron sulphide thin seam partings hard to achieve the core of fully mechanized coal mines use pressure flaking broken coal and tuberculosis . Thin Seam Mining complex structure with underground pressure in-depth and systematic introduction to the Thin Seam coal mining face underground pressure and wall damage law. the use of pressure mines reasonable supporting strength and cutting .…