Field testing the microminer--research continuous miner /
Johnson, Bradley V.
Field testing the microminer--research continuous miner / by Bradley V. Johnson, Scott W. Krepela, and Kelly C. Strebig. - [Washington, D.C.] : U.S. Dept. of the Interior, 1975. - [2], 11 p. : ill. - Technical progress report / Bureau of Mines, U.S. Department of the Interior ; 89. . - Technical progress report (U.S. Departnent of the Interior. 89. .
Prepared for Bureau of Mines Coal Mine Health and Safety Program /Safety.
92033242
Mines and mineral resources.
Mineral industries.
Mine explorations--Research.
Mine safety.
Field testing the microminer--research continuous miner / by Bradley V. Johnson, Scott W. Krepela, and Kelly C. Strebig. - [Washington, D.C.] : U.S. Dept. of the Interior, 1975. - [2], 11 p. : ill. - Technical progress report / Bureau of Mines, U.S. Department of the Interior ; 89. . - Technical progress report (U.S. Departnent of the Interior. 89. .
Prepared for Bureau of Mines Coal Mine Health and Safety Program /Safety.
92033242
Mines and mineral resources.
Mineral industries.
Mine explorations--Research.
Mine safety.