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Reading an article about the autumn leaves making a mess on the Appalachian Railroads [CSX, NS] and the expensive equipment and costs associated with keeping the tracks clear & clean.
In the article, it mentioned how the leaves cause 'flat spots' on the railcar wheels. The question more precisely asked is:
"How do the leaves cause flat spots on the wheels of train cars?"
In the article, it mentioned how the leaves cause 'flat spots' on the railcar wheels. The question more precisely asked is:
"How do the leaves cause flat spots on the wheels of train cars?"