The Effects of a retreating longwall on a three-entry gate road system
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Author
Contributions
- Allwes, Richard A. - Contributor
Publication
1985 - U.S. Dept. of the Interior, Bureau of Mines, Pittsburgh, Pa. (P.O. Box 18070, Pittsburgh 15236), Pennsylvania
Language
English
Word Count
4,750 words, Guess
Page Count
19 pages
Identifiers
- Library of Congress Control Number85600224
- Open LibraryOL2663184M
Classifications
- DDC622 s
- DDC622/.28
- LCCTN23 .U43 no. 8996
and 1 more
- LCCTN275 .U43 no. 8996
Series Statement
- Report of investigations / United States Department of the Interior, Bureau of Mines ;
- 8996
- Report of investigations (United States. Bureau of Mines) ;
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