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Regulations and Inspection Prevent Accidents from Falls of Roof
| Author: | Paul, J. W. |
|---|---|
| Year: | 1927 |
| Document Type: | N/A |
| Series: | United States Bureau of Mines Reports |
| Report Number: | Bureau of Mines Circular No. 6053 |
| Subjects: | Mining engineering. |
| Coal mines and mining -- Safety measures. | |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc100840/ |
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