Asbestos Exposure Mesothelioma Asbestos is minerals that are bonded together to create thin, fibrous substances. When these materials are disturbed tiny fibers are suspended in the air and may be inhaled. They stick to the lung's lining (pleura) and may reach the abdomen or heart lining (peritoneum or tunica vaginalis). https://www.instapaper.com/p/14470269