Geologic Factors In Predicting Coal Mine Roof Rock Stability In The Upper Kittanning Coalbed Somerset County Pa
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Coal Mine Roof Rating (CMRR)
Author | : Gregory M. Molinda |
Publisher | : |
Total Pages | : 92 |
Release | : 1994 |
Genre | : Coal mines and mining |
ISBN | : |
Influence of Overlying Strata on Methane Emissions in a Northern West Virginia Coal Mine
Author | : James P. Ulery |
Publisher | : |
Total Pages | : 24 |
Release | : 1984 |
Genre | : Coal mines and mining |
ISBN | : |
Water Jet Perforation
Author | : Benjamin W. Haynes |
Publisher | : |
Total Pages | : 728 |
Release | : 1981 |
Genre | : Aluminum oxide |
ISBN | : |