Gives method employed in the construction of the St. Clair tunnel on the Pennsylvania Schuylkill Valley Railroad, one and one-half miles west of Potsville, Pa. Shows plan, numerous cross-sections, progress profile, etc.


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    Title :

    Method employed in the construction of the St. Clair tunnel on the Pennsylvania Schuylkill Valley Railroad


    Additional title:

    Eng News


    Published in:

    Publication date :

    1887


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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