| Author: | Plis, Matthew N. |
|---|---|
| Additional Authors: | Teeters, Dale D., Rohrbacher, Timothy J. |
| Year: | 1993 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 9348 |
| Subjects: | Coal mines and mining--Valuation--Data processing |
| COALVAL | |
| Link: | https://hdl.handle.net/2027/mdp.39015078458851 |