| Author: | Strebig, Kelly C. |
|---|---|
| Additional Authors: | Schultz, Clifford W., Selim, A. Aly. |
| Year: | 1971 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of Interior, Bureau of Mines, |
| SUDOC: | I 28.23:7494 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7494 |
| Subjects: | Boring |
| Rock-drills | |
| Link: | https://hdl.handle.net/2027/mdp.39015078521773 |