Two-leg longwall shield mechanics
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Author
Contributions
- Schwemmer, David E. - Contributor
Publication
1989 - Dept. of the Interior, Washington, DC, District of Columbia
Language
English
Word Count
8,500 words, Guess
Page Count
34 pages
Identifiers
- Library of Congress Control Number88600305
- Open LibraryOL22072760M
Classifications
- LCCUSBMRI#9220 1989
Subjects
Series Statement
- Report of investigations (United States. Bureau of Mines) -- 9220.
Other Editions
- Two-leg longwall shield mechanics
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