Surface testing and evaluation of hopper-feeder-bolter

Author: Evans, Robert J.
Additional Authors: Saliunas, Joseph L., Mayercheck, William D.
Year: 1987
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:9171
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 9171
Subject: Coal-mining machinery--Testing
Link: https://hdl.handle.net/2027/mdp.39015078462879

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