Principles involved in moving earth by mechanized methods applied to skeletonizing of track; with crawler tractors as prime movers, system involves use of three new devices specially designed for cribbing work, including rooter for loosening ballast, drag bucket for removing it, and scraper shovel for cleaning it from ends of cribs; method has demonstrated ability to produce substantial economies as compared with hand methods.
This new cribbing method brings large savings on Pere Marquette
Ry Eng Maintenance
Railway Engineering and Maintenance ; 41 , n 11
1945
4 pages
Article (Journal)
English
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