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Bureau of mines safety labels
| Author: | Ilsley, L. C. |
|---|---|
| Year: | 1926 |
| Document Type: | USBI |
| SUDOC: | C 22.11:6005 |
| Series: | Information circular / United States Department of Commerce, Bureau of Mines ; |
| Report Number: | 6005 |
| Subject: | Coal mines and mining--Safety measures |
| Link: | https://hdl.handle.net/2027/mdp.39015078504266 |
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