| Author: | Sammarco, John J. |
|---|---|
| Year: | 1988 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:9209 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 9209 |
| Subject: | Coal-mining machinery--Automatic control |
| Link: | https://hdl.handle.net/2027/mdp.39015078476663 |