Anthony Thompson <thompson@...>
Ben Hom wrote:
The Class GG hopper car is a historically significant freight car design, as it is one of the first freight cars to feature the self-clearing "sawtooth" design familiar to everyone as a key design feature of a coal hopper.Yes, greatly significant and a landmark car design. But the only reason for the "sawtooth" was because it has two bays. There were single-bay cars, hoppers in every meaningful sense, at least a decade earlier--they were just smaller.
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