Author: | Paul, J. W. |
---|---|
Additional Authors: | Geyer, John Nicholas, |
Year: | 1928 |
Document Type: | USBM |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | C 22.5:421 |
Series: | Technical paper / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 421 |
Subjects: | Mining law |
Coal mines and mining | |
Mine timbering | |
Links: | https://hdl.handle.net/2027/mdp.39015086470914 |
https://hdl.handle.net/2027/mdp.39015077315904 |