Author: | Unger, Richard L. |
---|---|
Year: | 1989 |
Document Type: | BMRA |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.23:9246 |
Series: | Report of investigations / United States. Bureau of Mines ; |
Report Number: | 9246 |
Subjects: | Coal mines and mining--Equipment and supplies--Design and construction |
Mine railroads--Track maintenance vehicles--Design and construction | |
Link: | https://hdl.handle.net/2027/mdp.39015078477125 |