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Energetics of percussive drills
| Author: | Bruce, William E. |
|---|---|
| Additional Authors: | Paone, James. |
| Year: | 1969 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:7253 |
| Series: | Report of investigations / Bureau of Mines ; |
| Report Number: | 7253 |
| Subjects: | Rock-drills |
| Drilling and boring machinery | |
| Link: | https://hdl.handle.net/2027/mdp.39015078538363 |
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