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Start Over Partner UNT Libraries Government Documents Department Serial/Series Title Report of investigations (United States. Bureau of Mines) Year 1936 Month June

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Permissible Electric Mine Lamps (Supplement to Bulletin 332) (open access)

Permissible Electric Mine Lamps (Supplement to Bulletin 332)

Report issued by the U.S. Bureau of Mines on the improvements made on permissible electric mine lamps. The types of electric lamps approved for use, and their characteristics are presented. This report includes tables.
Date: June 1936
Creator: Ilsley, L. C. & Hooker, A. B.
System: The UNT Digital Library