Mine rescue life-line telephone assemblies

Additional Authors: Forbes, J. J., Petersen, Max S., Cash, F. E., Griffith, F. E.
Year: 1946
Document Type: BMRA
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.23:3875
Series: Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number: 3875
Subjects: Mine safety--Equipment and supplies
Mine rescue work
Link: https://hdl.handle.net/2027/mdp.39015078503391

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