i worked for an environmental firm..
unofficially, the twin towers were asbestos traps.
no official environmental report was issued otherwise they would of had only one option.. condemn then building if the report was OFFICIAL..
problem is location, location, location..
imagine those building as
DO NOT ENTER VAULTS..
to expensive to remove contaminants
to expensive to demo..
but can't demo due to asbestos..
what to do..
then BOOM 911..
a toxic cloud..
problem solved…
plus, building 7.. housed the SEC..
all the SEC investigation data VAPORIZED..