| Author: | Hamontre, H. C. |
|---|---|
| Additional Authors: | Armstrong, F. E., Mueller, F. G. |
| Year: | 1954 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:5092 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 5092 |
| Subjects: | Boring machinery |
| Well drillers | |
| Link: | https://hdl.handle.net/2027/mdp.39015078536300 |