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

Bibliographic Details

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