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Modified longwall mining with a German coal planer.
| Author: | Haley, Wilbur A. |
|---|---|
| Additional Authors: | Haley, Wilbur A., Quenon, H. A. |
| Year: | 1954 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:5062 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 5062 |
| Subjects: | Coal-mining machinery |
| Longwall mining--Equipment and supplies | |
| Link: | https://hdl.handle.net/2027/mdp.39015078536391 |
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