Author: | Andreuzzi, Frank C. |
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Year: | 1970 |
Document Type: | USBI |
Issuing Agency: | U.S. Bureau of Mines; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., |
SUDOC: | I 28.27:8485 |
Series: | Bureau of Mines. Information circular 8485 |
Subjects: | Air--Pollution |
Coal mines and mining--Safety measures | |
Coal mine waste | |
Link: | https://hdl.handle.net/2027/mdp.39015078461780 |