I was involved in the research and planning of a new poultry feed mill beginning about 10 years ago. Our old mill and its rail siding could only take 10 hopper cars of corn at a time. We got the “single“ car rate from CSX. About $3600 per car, Midwest to NE Georgia. Basically $1.00 per bushel of corn. We used around 50 cars a week or 160,000 bushels at that time.
The proposed new mill with a 1.5 miles of loop siding could take
90 -120 car unit trains. Freight cost was about $2,300 per car or $0.65 per bushel. The simplest justification for a new mill was that the railroad would pay for the new $30 million mill in 10 years or so.
162,000 x $.35 x 52 = $2,948,400 savings per year.
The new mill opened in 2021. I was retired by then thankfully

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