Underground parkway cables used throughout; type 50 switch machines and SA signals; interlocking machine details; signals; track circuits.


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    Title :

    Union pacific installs interlocking at Cheyenne


    Additional title:

    Ry Signaling


    Published in:

    Publication date :

    1932


    Size :

    3 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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