Exposure to asbestos can cause several serious and deadly diseases that include lung cancer and mesothelioma. There are a large number of ways a person could have been exposed to asbestos in their lifetime. The 20th century saw asbestos use at its highest. It has many versatile qualities that make it perfect for a wide range of uses including as an insulator. Asbestos is fire-retardant and can also withstand highly dangerous chemicals, which is why it was used in construction sites, shipyards, Navy vessels, chemical plants and much more. Many U.S. veterans may have been exposed to the deadly fibers that are released from friable (easily breakable) asbestos, specifically navy personnel. As a result of exposure, there are four common asbestos diseases that can develop. Knowing what these common diseases are can help victims seek the right medical assistance for diagnosis.