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Practical Underground Education of the Coal Miner
| Author: | Grove, G. W. |
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| Year: | 1927 |
| Document Type: | N/A |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Circular No. 6054 |
| Subject: | Coal mines and mining -- Safety measures. |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc100841/ |
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