The Online Books Page

Books by G. J. Chekan:

Books in the extended shelves:

• Chekan, G. J. (Gregory J.): Analysis and design considerations for superimposed longwall gate roads (Washington, D.C. : United States, Department of the Interior, Bureau of Mines, 1992., 1992), also by Jeffrey M. Listak and United States Bureau of Mines (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Comparative study of pillar load transfer associated with multiple-seam mining (U.S. Dept. of the Interior, Bureau of Mines, 1988), also by Rudy J. Matetic (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Convergence measurements for squeeze monitoring : instrumentation and results (U.S. Dept. of the Interior, Bureau of Mines, 1981), also by Eric R. Bauer and United States. Bureau of Mines. Ground Control Progam (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Design of bulkheads for controlling water in underground mines (U.S. Dept. of the Interior, Bureau of Mines, 1985) (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Design of bulkheads for controlling water in underground mines (U.S. Dept. of the Interior, Bureau of Mines, 1985) (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Design practices for multiple-seam longwall mines (Washington, D.C. : United States, Department of the Interior, Bureau of Mines, 1993., 1993), also by Jeffrey M. Listak (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): The Effects of a retreating longwall on a three-entry gate road system (U.S. Dept. of the Interior, Bureau of Mines, 1985), also by D. R. Babich, Jeffrey M. Listak, and Richard A. Allwes (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Effects of abandoned multiple seam workings on a longwall in Virginia (U.S. Dept. of the Interior, Bureau of Mines, 1989), also by David L. Dwyer and Rudy J. Matetic (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania (Bureau of Mines, U.S. Dept. of the Interior, 1992), also by Eric R. Bauer, Gary P. Sames, and United States Bureau of Mines (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Interactions between multiple seam longwall and room-and-pillar operations : a case study in Boone County, WV (Pittsburgh, Pennsylvania : U.S. Dept. of the Interior, Bureau of Mines, [1990], 1990), also by Rudy J. Matetic (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Investigation of longwall gateroad roof support characteristics at Powhatan No. 4 Mine : instrumentation plan (U.S. Dept. of the Interior, Bureau of Mines, 1982), also by D. R. Babich (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Loading characteristics of pillars in multiple-seam mining operations (U.S. Dept. of the Interior, Bureau of Mines, 1988), also by Rudy J. Matetic (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Pillar load transfer associated with multiple-seam mining (U.S. Dept. of the Interior, Bureau of Mines, 1987), also by Rudy J. Matetic and James A. Galek (page images at HathiTrust)
• Chekan, G. J. (Gregory J.): Strata interactions in multiple-seam mining--two case studies in Pennsylvania (U.S. Dept. of the Interior, Bureau of Mines, 1986), also by James A. Galek and Rudy J. Matetic (page images at HathiTrust)

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