This story was originally published by Inside Climate News and is reproduced here as part of the Climate Desk collaboration. The chair of the National Transportation Safety Board called Norfolk Southern’s conduct during the board’s investigation of the 2023 train derailment in East Palestine “unconscionable” at a meeting this week to finalize the NTSB’s findings. Jennifer Homendy, the NTSB chair, said at the close of the eight-hour session that Norfolk Southern “demonstrated complete disregard” for the rules and regulations put in place to protect the integrity of the investigation.