Ohio train derailment probe focuses on failed pressure valves on cars with toxic chemical
By David Shepardson and Brad Brooks WASHINGTON (Reuters) -The investigation into the Ohio train derailment has found that aluminum parts on three tank cars may have melted and caused pressure relief devices not to function, contributing to the release of toxic chemicals last month, the National Transportation Safety Board (NTSB) said on Thursday. The Feb. 3 derailment of a Norfolk Southern-operated train in East Palestine, Ohio caused cars carrying toxic […]