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Preparation characteristics of coal from Clearfield County Pa.
| Author: | Crentz, W. L. |
|---|---|
| Year: | 1952 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:4894 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 4894 |
| Subject: | Coal preparation |
| Link: | https://hdl.handle.net/2027/mdp.39015078479741 |
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