Use of a large-diameter auger in mining pitching anthracite beds

Author: Schimmel, J. T.
Additional Authors: Markle, Donald., Tavenner, W. H.
Year: 1962
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:6135
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 6135
Subjects: Coal-mining machinery
Augers
Link: https://hdl.handle.net/2027/mdp.39015078524082

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