The railroad industry in general was a heavy user of asbestos throughout most of the twentieth century. Steam locomotives and some diesels locomotives were insulated with asbestos. Insulation was commonly used on and around locomotives, boxcars and cabooses, refrigeration units, pipes in and around the locomotive cabs, and steam and hot water lines. Asbestos was also commonly used by railroad workers in packing, rope, cement, gaskets, and in floor tiles for passenger cars. Railroad brakes pads and clutch linings also commonly contained asbestos. Doran & Murphy has worked with railroad employees in every craft and is knowledgeable about the various sources of asbestos exposure faced by persons in those crafts.