Both compressed air and trolley electric locomotives are used; haulage track 30 in. gage, with 40 and 60 lb rail; frogs are solid manganese steel; ties 6 by 8 in. by 5 ft 2 in. sawed Oregon fir; 6 shafts and 3 tunnels; shaft dimensions; skip loading stations; electric hoisting practice.


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    Title :

    Haulage and hoisting at mines of inspiration consolidated copper co


    Additional title:

    Min Congress J


    Contributors:

    Published in:

    Publication date :

    1934


    Size :

    2 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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