Asbestos is a naturally occurring fibrous mineral.
Because it is strong, won't burn, and resists corrosion, it became a popular commercial product. The most common asbestos types are chrysotile, amosite and crocidolite. Asbestos was commonly used in many building materials especially between the early 1900's and into the 1970's. It can be found in thermal insulation, fireproofing, floor coverings, ceiling tiles, cement pipe, granular and corrugated paper pipe wrap, lab bench tops, lab fume hoods, and acoustical and decorative treatment for ceilings and walls. Intact and undisturbed asbestos materials do not pose a health risk.