Exposure to asbestos fibers can cause asbestosis and other diseases after a latency of 10--40 years from initial exposure to onset of illness. Asbestos still is used in the United States (approximately 2,200 metric tons in 2006) in certain products manufactured domestically. In addition, an undocumented amount of asbestos continues to be imported in products manufactured elsewhere, and a substantial amount of asbestos remains in existing buildings and manufactured products. An estimated 1.3 million construction and general industry workers in the United States potentially are exposed to asbestos each year, mainly from manipulation of asbestos during renovation or demolition activities. Also, although asbestos ore is no longer mined in the United States (4), some U.S. mine workers might remain at risk for exposure to asbestos contained in other ores.