Additional Authors: | Shields, J. J., Magnuson, M. O., Dowd, J. J., Haley, W. A. |
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Year: | 1954 |
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.27:7696 |
Series: | Information circular / United States. Bureau of Mines ; |
Report Number: | 7696 |
Subjects: | Bituminous coal industry--United States |
Coal-mining machinery | |
Link: | https://hdl.handle.net/2027/mdp.39015077562430 |