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1. Loading characteristics of pillars in multiple-seam mining operations / by G.J. Chekan, R.J. Matetic.

by Chekan, G. J. (Gregory J.) | Matetic, Rudy J.

Material type: book Book; Format: print Publisher: Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1988Availability: No items available

2. Comparative study of pillar load transfer associated with multiple-seam mining / by R.J. Matetic, G.J. Chekan

by Matetic, Rudy J | Chekan, G. J.

Material type: book Book; Format: print Publisher: Pittsburgh, Pa. : U.S. Dept. of the Interior, Bureau of Mines, 1988Availability: No items available