Describes methods used when an inrush of soft material prevented progress by customary methods. (2500 w.) (No. 29137)


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    Title :

    Driving the big savage railroad tunnel with compressed air


    Additional title:

    Eng Rec


    Published in:

    Publication date :

    1911


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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