Author: | Snodgrass, James J. |
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Year: | 1982 |
Document Type: | TPRM |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines ; |
SUDOC: | I 28.26/6:117 |
Series: | Technical progress report ; |
Report Number: | 117 |
Subjects: | Coal-mining machinery |
Mine examination | |
Link: | https://hdl.handle.net/2027/mdp.39015077583022 |