Author: | Curth, Ernest A. |
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Year: | 1971 |
Document Type: | USBI |
Issuing Agency: | U.S. Bureau of Mines; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., |
SUDOC: | I 28.27:8506 |
Series: | Information circular / United States. Bureau of Mines ; |
Report Number: | 8506 |
Subjects: | Coal mine accidents |
Mine haulage--Accidents | |
Coal mines and mining--Safety regulations | |
Links: | https://hdl.handle.net/2027/mdp.39015078514711 |
https://hdl.handle.net/2027/pst.000029752140 |