Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining
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Author
Contributions
- Oyler, David C. - Contributor
- Chase, Frank E. - Contributor
Publication
1989 - U.S. Dept. of the Interior, Bureau of Mines, Washington, D.C. (2401 E St., N.W., Washington 20241), District of Columbia
Language
English
Word Count
10,000 words, Guess
Page Count
40 pages
Identifiers
- Library of Congress Control Number88600453
- Open LibraryOL2147959M
Classifications
- DDC622 s
- DDC622/.334
- LCCTN23 .U43 no. 9240
and 1 more
- LCCTN292 .U43 no. 9240
Subjects
Topics
Places
Series Statement
- Report of investigations ;
- 9240
- Report of investigations (United States. Bureau of Mines) ;
Other Editions
- Performance of a novel bump control pillar extracting technique during room-and-pillar retreat coal mining
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