Illustrated account of tunnel work in progress in mining districts and for drainage. (3500 w.) (No. 9997)


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    Title :

    Tunnel driving in Colorado


    Additional title:

    Min Sci Pr


    Contributors:


    Publication date :

    1909


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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