| Author: | Morrell, Roger J. |
|---|---|
| Additional Authors: | Swanson, David E., Larson, David A. |
| Year: | 1985 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:9003 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 9003 |
| Subjects: | Mining machinery |
| Rock mechanics | |
| Drag bits (Drilling and boring)--Testing | |
| Link: | https://hdl.handle.net/2027/mdp.39015078489310 |