Instrument to measure the initial deformation of rock around underground openings /
Beus, Michael J.
Instrument to measure the initial deformation of rock around underground openings / by Michael J. Beus and Earl L. Phillips and Galen G. Waddell. - [Washington] : United States. Dept. of the Interior, Bureau of Mines, [1975.] - 40 p. : ill. - Report of investigations ; 8275 . - Report of investigations (United States. Bureau of Mines) ; 8275 .
90065055
Rock deformation.
Rock mechanics--Research
Instrument to measure the initial deformation of rock around underground openings / by Michael J. Beus and Earl L. Phillips and Galen G. Waddell. - [Washington] : United States. Dept. of the Interior, Bureau of Mines, [1975.] - 40 p. : ill. - Report of investigations ; 8275 . - Report of investigations (United States. Bureau of Mines) ; 8275 .
90065055
Rock deformation.
Rock mechanics--Research