Miniature lever machines with direct wire and code control systems are used at Columbia, Pa, and Thorndale, to conform with requirements set up by track changes in territory which was recently electrified.


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    Title :

    Interlocking changes on Pennsylvania


    Additional title:

    Ry Signaling


    Published in:

    Publication date :

    1938


    Size :

    5 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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