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Safety aspects of longwall mining in the Illinois coal basin
| Author: | Curth, Ernest A. |
|---|---|
| Year: | 1978 |
| Document Type: | USBI |
| Issuing Agency: | Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8776 |
| Series: | Information circular - Bureau of Mines ; |
| Report Number: | 8776 |
| Link: | https://hdl.handle.net/2027/mdp.39015078453787 |
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