| Author: | Merrill, Robert H. |
|---|---|
| Additional Authors: | Peterson, Jon, |
| Year: | 1961 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:5881 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 5881 |
| Subject: | Boring |
| Link: | https://hdl.handle.net/2027/mdp.39015078536763 |