Search Results - Lamps and ventilation in California mines.

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  1. 1
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    Permissible electric cap lamps and ventilation in certain California mines and water-tunnel construction.

    Published 1932
    Full Text (via ProQuest)
    Government Document eBook

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  2. 2
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    Permissible electric cap lamps and ventilation in certain California mines and water-tunnel construction

    Published 1932
    Government Document Microfilm Book

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  3. 3
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    Permissible electric cap lamps and ventilation in certain California mines and water-tunnel construction / by Ash, S. H. (Simon Harry), 1889-

    Published 1932
    “…Lamps and ventilation in California mines.…”
    Search for the full-text version of this title in HathiTrust
    Government Document Book

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