This case involves a nuclear submarine machinist who was exposed to insulation dust for many years in the Navy. The machinist served on a submarine that was in the shipyard being overhauled and he had daily exposure to dust from insulation replacement taking place in his work area. The machinist was also exposed to insulation dust when he brushed up against the insulation covering 90 percent of the submarine’s piping. Later in his career, the machinist was transferred to another submarine where he was exposed to dust from insulation replacement work that was going on while the submarine was being overhauled. The machinist’s job involved doing repairs to valves and pumps and he was often exposed to insulation dust when handling the insulation. The machinist’s job also involved working with gaskets that were made of asbestos. The machinist regularly had to remove old gaskets and this process caused asbestos dust to enter the air. The machinist later developed T-Cell Lymphoma and mesothelioma, consequently suing the manufacturer of the gaskets for not warning him about the environmental dangers of being exposed to asbestos.