Many folks ask what causes Asbestos-related diseases.  Mesothelioma, one of the most serious asbestos-related diseases, and other related cancers are caused by repeated inhalation of asbestos fibers.  The fibers are not visible and testing to determine whether or not the deadly microscopic fibers are in the air requires special equipment.   Asbestos was used in insulation, roofing, floor tile, siding brake linings and other fire retardant materials.  Worker using asbestos containing materials or around those using asbestos containing materials had no knowledge of its dangers.  These workers got up each and every day to provide for their families, all the while, exposing themselves to deadly microscopic fibers.  Those that have suffered or are suffering from Asbestos-related diseases are entitled to accountability from those who knowingly caused their exposure.