airslide hoppers are grey with black lettering and run on 100-ton
Barber Roller Bearing trucks. Built in April 1984 by General American
Transportation, this 4,566 cubic-foot airslide covered hopper had
a special epoxy composite lining. These cars were specifically designed
for use with fine-grained commodities, like powdered sugar or flour,
which could settle en-route making unloading difficult.