The most common are asbestos, which was very popular in building construction and fireproofing for most of the 20th century until its danger as a health hazard was realized, and radon, an odorless gas which occurs naturally as a radioactive decay product of radium
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Arch Environ Contam Toxicol 50:205212 Moerman J, Potts G (2011) Analysis of metals leached from smoked cigarette litter
1,996,002, 25 March Seidenberg AB, Rees VW, Alpert HR, OConnor RJ, Connolly GN (2011) Ignition strength of 25 international cigarette brands
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