We know that mesothelioma is caused by exposure to asbestos, but there are several jobs that deal with the actual asbestos mineral or fibre. Some industries that do steel work also deal with asbestos in some amounts. There have been incidents where people in the following industries have developed mesothelioma. Some pipe fitters, ship fitters, boilermakers, insulators, brake mechanics and even some manufacturing industries are known to be risky titles. If your job involves asbestos minerals, there should be signs around the work place that warn people of it. You should also be wearing protective coverings all around your body. The most important component of your outerwear is your mask which holds the filter that blocks off the asbestos exposure. You should never enter an asbestos mining region without the proper uniform as it is extremely risky. Workers in these industries should really be careful when they are working with anything related to asbestos and other minerals.