Ballast tamper is described as a power-operated machine for compacting ballast under crossties. Ballast tamper, a track installation and maintenance machine used to tamp down the rock ballast used to hold the ties in position on the roadbed.
Ref: 122107/2006-09-19

Other Database Pages Exist for this Phrase:
Tamper (Tamper refers to the small, pestle-like device ...)
Ball (Ball is described as a sphere; a round body of ...)
Ballast (Ballast is identified as a weight at the bottom ...)
Compacting (Compacting means pressing a plastic material and ...)

List of books: Ballast,tamper

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