| Author: | Rice, George S. |
|---|---|
| Year: | 1928 |
| Document Type: | N/A |
| SUDOC: | C 22.3:277 |
| Series: | Bulletin (United States. Bureau of Mines) |
| Report Number: | Bulletin 277 |
| Subject: | Coal mines and mining -- Safety measures. |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc38815/ |