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Precautions to be observed in entering abandoned exploratory shafts and pits
| Author: | Pickard, Byron O., |
|---|---|
| Year: | 1921 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:2295 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 2295 |
| Subjects: | Firedamp |
| Mine safety | |
| Methane | |
| Mine gases | |
| Mine gases--Safety measures | |
| Abandoned coal mines | |
| Mine shafts | |
| Blackdamp | |
| Abandoned coal mines--Accidents | |
| Abandoned mines--Risk assessment | |
| Abandoned mines | |
| Mine shafts--Safety measures | |
| Link: | https://hdl.handle.net/2027/mdp.39015086554964 |
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