I agree, but the decision to abandon asbestos it was *not* based on engineering or safety concerns. It’s an old story by now, but the World Trade Center used asbestos up to the 66th story, at which time “safety” (read fear of the plaintiff bar) made them switch to a less effective alternative. This at least contributed to and hastened the structural failure of the upper stories.
I’m not sure if that’s totally correct. I don’t know whether or not they stopped sing asbestos above the 66th floor, as you say, but the engineering studies done about the collapse of the Towers suggest it wouldn’t have made a difference. The insulation, of whatever material, is sprayed on the beams. The violence of the explosions when the planes hit literally blew the insulation off the steel..they were bare, and that’s what caused the building to collapse.