Matheson Library
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Field testing the microminer--research continuous miner / by Bradley V. Johnson, Scott W. Krepela, and Kelly C. Strebig.

By: Contributor(s): Material type: TextTextSeries: Technical progress report / Bureau of Mines, U.S. Department of the Interior ; 89. | Technical progress report (U.S. Departnent of the Interior ; 89.Publication details: [Washington, D.C.] : U.S. Dept. of the Interior, 1975.Description: [2], 11 p. : illSubject(s):
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