Permissible Electric Cap Lamps and Ventilation in Certain California Mines and Water-Tunnel Construction

Author: Ash, S. H. (Simon Harry), b. 1889
Year: 1932
Document Type: N/A
Issuing Agency: United States. Bureau of Mines.
Series: United States Bureau of Mines Reports
Report Number: Bulletin 359
Link: https://digital.library.unt.edu/ark:/67531/metadc12528/

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