Modified longwall mining with a German coal planer.

Author: Haley, Wilbur A.
Additional Authors: Quenon, H. A., Haley, Wilbur A.
Year: 1954
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:5062
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 5062
Subjects: Longwall mining--Equipment and supplies
Coal-mining machinery
Link: https://hdl.handle.net/2027/mdp.39015078536391

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