Additional Authors: | Brewer, R. E., Ode, W. H., Wolfson, D. E., Birge, G. W., Reynolds, D. A., Davis, Joseph Dana, |
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Year: | 1949 |
Document Type: | USBM |
Issuing Agency: | U.S. Government Printing Office, Bureau of Mines, |
Series: | Technical paper / Bureau of Mines ; |
Report Number: | 712 |
Subject: | Coal mines and mining |
Link: | https://hdl.handle.net/2027/mdp.39015078487637 |