| Author: | Cecala, Andrew B. | 
|---|---|
| Additional Authors: | Jankowski, Robert A., Kissell, Fred N. | 
| Year: | 1985 | 
| Document Type: | USBI | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.27:9052 | 
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; | 
| Report Number: | 9052 | 
| Subjects: | Longwall mining | 
| Coalbed methane | |
| Link: | https://hdl.handle.net/2027/mdp.39015078459248 |