Panel type electric interlocking machine installed at Long-view, Texas; plant includes use of red over lunar white aspect to authorize switching moves over hand throw switches and certain power switches.


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    Title :

    Texas and pacific new all-relay interlocking


    Additional title:

    Ry Signaling Communications



    Publication date :

    1949


    Size :

    4 pages


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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    Coles, J.R. | Engineering Index Backfile | 1934




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