Congressional Research Service, East Palestine, OH, Train Derailment and Hazardous Materials Shipment by Rail: Frequently Asked Questions, CRS Report R47435 (2023) (reporting NTSB

Congressional Research Service, East Palestine, OH, Train Derailment and Hazardous Materials Shipment by Rail: Frequently Asked Questions, CRS Report R47435 (2023) (reporting NTSB preliminary findings that the train passed detectors measuring an increase in bearing temperature above normal levels but not above the thresholds set by the railroad that would have required stopping the train).