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unit train

a freight train of uniform consist that remains coupled, carrying a bulk commodity, as coal or wheat, to a specific destination and that after unloading returns to the point of origin ready for another load.
Origin of unit train
1960-65 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for unit train
  • Another amendment will provide the issuers of barley shipping certificates the opportunity to declare unit train delivery.
  • Enter the unit train receiving charge in cents per hundredweight.
  • The unit train was operated in normal fashion, except for the added instrumentation car.
  • Clean coal is transported by unit train to various customers.
  • Costs are calculated as loaded in a unit train, free-on-board the tipple, at a rate of return prescribed by the evaluator.
  • However, after the track maintenance work was completed, unit train cycle times did not return to their historical averages.

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