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Hydraulic Mine Filling: Its Use in the Pennsylvania Anthracite Fields, A Preliminary Report
| Author: | Enzian, Charles |
|---|---|
| Year: | 1913 |
| Document Type: | N/A |
| SUDOC: | I 28.3:60 |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bulletin 60 |
| Subjects: | Anthracite coal -- Pennsylvania. |
| Coal mines and mining -- Pennsylvania. | |
| Coal mines and mining -- Safety measures. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc38737/ |
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