About 15 percent of United States mines are contaminated by asbestos, with exposure levels of at least 0.1 fiber per cubic centimeter (cc). According to the U.S. Mine Safety and Health Administration (MSHA), this level of exposure has been the threshold level since 2005. The MSHA says that prior to 2005, exposure was 2 fibers per cc – about 20 times the threshold density.
Several Simmons Hanly Conroy clients have been employed at mining operations throughout the United States. These include mines in the following states:
Even though not all coal mines were home to asbestos, most mining equipment accounted for an additional threat of exposure. Brake linings, welding blankets, pipe insulation and transit panels from mines have all been known to contain asbestos. In addition to these common places, asbestos has been found in: