Vendeur : liu xing, Nanjing, JS, Chine
paperback. Etat : 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 . N° de réf. du vendeur BX066597
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