Carbonizing properties and petrographic composition of thick Freeport-bed coal from Harmar mine, Harmarville, Allegheny County, Pa. : and the effect of blending this coal with Pocahontas No. 3- and 4-bed coals / by J.D. Davis [and others]
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| Main Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. G.P.O.,
1943.
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| Series: | Technical paper (United States. Bureau of Mines) ;
655. |
| Subjects: |