How Northern Pacific is using special equipment pulled along behind work train to skeletonize and make initial lift or new ballast without jacks; as plow or sled moves along, track is "humped up" over it, bottoms of ties sliding across runners on top of device; with plow, crib material is carried to shoulder; sled redeposits ballast in layer under ties. (See also Ry Age v 139 n 5 Aug 1 1955 p 18-21)


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    Titel :

    Raising track with "sleds"


    Weitere Titelangaben:

    Ry Track Structures


    Erschienen in:

    Erscheinungsdatum :

    1955


    Format / Umfang :

    5 pages


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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