Asbestos Exposure Mesothelioma Asbestos is minerals that are joined to form thin, fibrous substances. When these materials are agitated tiny fibers are suspended in the air and may be inhaled. They stick to the lung's lining (pleura) and can get into the abdomen or heart lining (peritoneum or tunica vaginalis). https://kinney-lehmann.thoughtlanes.net/10-things-you-learned-from-kindergarden-theyll-help-you-understand-causes-of-mesothelioma-other-than-asbestos/