Asbestos is a group of six naturally-occurring silicate minerals, including serpentine (or chrysotile), riebeckite (crocidolite), cummingtonite-gunerite (amosite), anthophyllite, actinolite or tremolite. These minerals have been actively mined for their physical properties such as their resistance to heat, electrical and chemical damage, sound absorption and tensile strength; thereby making their applicability widespread throughout various industries such as manufacturing and primarily in building construction for its flame retardant and insulating properties.
The inhalation of asbestos fibers can cause serious illnesses that are strongly associated with exposure to asbestos. Airborne asbestos fibers are a significant health threat because asbestos fibers are microscopic and invisible to the unaided eye. In addition, they have the physical characteristics to bypass the ability of the human lung to filter air contaminants. As a result, exposure to asbestos allow the fibers to reach deep within the lungs, and may irritate and scar lung tissues. Long-term chronic and acute exposure to asbestos fibers may cause respiratory diseases such as lung cancer, asbestosis and mesothelioma.
Asbestos containing materials become a health hazard once they are disturbed. Intact, asbestos fibers imbedded within construction materials and components are inert and do not pose a health hazard; however, once they are disturbed, through physical contact or building renovation and demolition activities, asbestos fibers may be rendered airborne.