Use of a continuous borer in mining pitching anthracite beds

Author: Tavenner, William H.
Additional Authors: Schimmel, J. T.
Year: 1966
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:6759
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 6759
Subjects: Coal-mining machinery
Boring machinery
Link: https://hdl.handle.net/2027/mdp.39015078513481

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