Development of a mechanical roof breaker for ground control in longwall operations under massive roof /

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Bibliographic Details
Main Author: Tandanand, Sathit
Corporate Author: United States. Bureau of Mines
Format: Unknown
Language:English
Published: Washington : U.S. Dept. of the Interior, Bureau of Mines, 1979.
Series:Report of investigations (United States. Bureau of Mines) ; 8416.
Subjects:
Ground control (Mining)
Rock mechanics.
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