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Permissible junction boxes
| Author: | Ilsley, L. C. |
|---|---|
| Additional Authors: | Kearns, Raymond Arthur, |
| Year: | 1929 |
| Document Type: | USBM |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines : |
| SUDOC: | C 22.5:454 |
| Series: | Technical paper / United States Department of Commerce, Bureau of Mines ; |
| Report Number: | 454 |
| Subject: | Coal mines and mining--Safety measures |
| Link: | https://hdl.handle.net/2027/mdp.39015078543348 |
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