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Book Description paperback. Condition: New. Pub Date: 2013-12-01 Pages: 226 Language: Chinese Publisher: China Mining University Press inclined thick seam mining methods commonly used mechanized caving horizontal section. the mined-out area has always been at the top of the face. which led to recovery overlying rock tunnel complex environment. the need for deep inclined thick seam working face of the roadway support specialized research techniques. Inclined thick Coal Seam roadway technology research in Urumqi mining inclined thick sea. Seller Inventory # CR018850