old aged dangerous roof of a wooden shack made of prefabricated corrugated panels

abatement asbestos roof testing removing rooftop removal asbestosis fibers asbestoscement construction material illness danger poisonous vulnerability aging process building activity mesothelioma fiber tumor carcinogen lung cancer corrugated risk dust amiante panels safety air pollution industry encapsulation exposure environmental damage cancerous carcinogenicity dangerous toxic substance waste sickness inhalation hazard cement roofing sheets old aged wooden shack made prefabricated structure