Johnson, Bradley V. <br/><br/>
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. .
<br/><br/> Prepared for Bureau of Mines Coal Mine Health and Safety Program /Safety. 
<br/><br/><label>LCCN: </label>92033242 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources.<br/>Mineral industries.<br/>Mine explorations--Research.<br/>Mine safety.