Room and pillar retreat mining
a manual for the coal industry
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Author
Contributions
- Hawkins, Steven A. - Contributor
- Thompson, Robert R. - Contributor
Publication
1981 - For sale by the Supt. of Docs., U.S. G.P.O., Washington, D.C, District of Columbia
Language
English
Word Count
57,000 words, Guess
Page Count
228 pages
Identifiers
- Internet Archiveroompillarretrea00kauf
- Library of Congress Control Number80620000
- Open LibraryOL4239975M
Classifications
- DDC622 s
- DDC622/.334
- LCCTN295 .U4 no. 8849
and 1 more
- LCCTN800 .U4 no. 8849
Subjects
Topics
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