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 Track and Structures v 51 n 8 Aug 1955 p 22-6)
Raising track with "sleds"
Ry Age
Railway Age ; 139 , n 5
1955
4 pages
Article (Journal)
English
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