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Developing a lock-hopper feeder for hydraulic hoisting of coal
| Author: | Dierks, Henry A. |
|---|---|
| Additional Authors: | Link, H. B. |
| Year: | 1964 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior. Bureau of Mines, |
| SUDOC: | I 28.23:6347 |
| Series: | Report of investigations / Bureau of Mines ; |
| Report Number: | 6347 |
| Subject: | Coal-mining machinery |
| Links: | https://hdl.handle.net/2027/mdp.39015077556838 |
| no.6347 |
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