old aged and dangerous roof made of curved prefabricated panels and wave-d panels

asbestos roof asbestosis abatement fibers amiantus asbestic aged asbestine old waveshaped surface level cancer pollution testing removing rooftop removal asbestoscement construction material illness danger poisonous aging process building activity mesothelioma fiber tumor carcinogen lung corrugated risk dust amiante panels air industry exposure environmental damage cancerous carcinogenicity dangerous toxic substance inhalation cement roofing