Ohio train derailment most likely caused by an overheated wheel bearing, a preliminary NTSB report reveals
The derailment of a train carrying dangerous chemicals in Ohio can be traced to an overheated wheel bearing that was 253 degrees hotter than ambient temperatures, a preliminary report from the National Transportation Safety Board revealed Thursday. The report also described why authorities opted for a controlled burn of one chemical, vinyl chloride, days after the derailment.
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