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Mining anthracite without roof-fall accidents at Colonial Colliery, Colonia Colliery Co., Natalie, Pa.
| Author: | Currie, R. D. |
|---|---|
| Year: | 1934 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:6783 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 6783 |
| Subjects: | Anthracite coal--Pennsylvania |
| Mine safety--Pennsylvania | |
| Coal mines and mining--Safety measures--Pennsylvania | |
| Link: | https://hdl.handle.net/2027/mdp.39015077569104 |
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