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Room-and-pillar Mining in Bump-prone Conditions and Thin Pillar Mining as a Bump Mitigation Technique

Thomas P. MuchoTimothy M. BartonCraig S. Compton

出版	United States Department of the Interior, Bureau of Mines, 1993
URL	http://books.google.com.hk/books?id=sz9JGwAACAAJ&hl=&source=gbs_api