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Displaying 1-2 of 2 results for author "Chekan, G. J. (Gregory J.)"
Influence of subjacent gob on longwall development mining in the Upper Kittanning Coalbed of south-central Pennsylvania [microform] / by E.R. Bauer, G.J. Chekan, and G.P. Sames.
- Text
- Washington, D.C. : Bureau of Mines, U.S. Dept. of the Interior, 1992.
- 1992
Convergence measurements for squeeze monitoring : instrumentation and results / by Eric R. Bauer and Gregory J. Chekan.
- Text
- Pgh. [i.e. Pittsburgh], Pa. : U.S. Dept. of the Interior, Bureau of Mines, [1981]
- 1981
- 1 Item
Item details Format Call Number Item Location Text I 28.26/6:113 Off-site
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