Author: | Denny, Edward H. |
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Additional Authors: | Jennings, F. R. |
Year: | 1935 |
Document Type: | USBI |
Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
SUDOC: | I 28.27:6860 |
Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
Report Number: | 6860 |
Subjects: | Coal mines and mining--Colorado |
Mine accidents--Colorado | |
Mine safety--Colorado | |
Link: | https://hdl.handle.net/2027/mdp.39015077568668 |