Inventions by "men at the mines," which were displayed at Annual Coal Convention: Rail Bond Tester, designed by J. E. ROBLEE; Compromise Rail Joint, W. F. WRIGHT; Shaft Extractor, E. A. PRUDENT; Steel Mine Car Straightener, W. T. DALTON; Utility Buggy, D. LOCKE; Safety Motor Suspension, J. P. JONES.


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    Title :

    Miners' exhibit


    Additional title:

    Min Congress J


    Published in:

    Publication date :

    1939


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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