High on pentane Seems I remember a “60 Minutes”(?) story sometime in the wake of Se[tember 11 on the vulnerability of U.S. chemical plants to terrorist attacks. Critics branded Bush Homeland Security Secretary Michael Chertoff’s proposed security upgrades “toothless.” “There are a lot of ways to skin a cat, and we’re going to let chemical operators figure out the right way, as long as the cat gets skinned,” Chertoff said. So. Whatever happened with that? Meantime, hazardous chemicals transported by rail seem to be having a bad 2023 so far (Newsweek): On February 3, a tanker train derailed in the Ohio town of East Palestine, near the state border with Pennsylvania. The crash led to multiple explosions and chemical leaks, prompting the governors of both states to issue evacuation notices for the town and its surrounding areas. Controlled burns of the vinyl chloride from the train’s tanks were initiated, with residents warned that the air could be flooded with dangerous gases like phosgene and hydrogen chloride. The fiery crash was one of more than a dozen train derailments reported in the U.S. this year, only 1 1/2 months in. Another wreck, on January 19, also occurred in Ohio, with several train cars stretching over miles derailing between the towns of Trinway and Adam’s Mill, according to the Times Recorder. It was considerably less destructive than the one in East Palestine, as the cars were empty, though cleanup efforts were projected to last for a week. Derailment chemical spills are not…