FILE - Environmental cleanup specialists work at an asbestos cleanup site in Libby, Montana, on Sept. 13, 2018. A lawsuit being tried in federal court alleges BNSF Railway knew the vermiculite it was hauling through Libby from a nearby mine was tainted with asbestos. The railroad denies the allegations. (Kurt Wilson/The Missoulian via AP, File)
FILE - The town of Libby, Mont., is seen Feb. 17, 2010. Thousands of people have been sickened and hundreds killed by asbestos contamination in the Libby area. Victims of asbestos exposure are suing BNSF Railway alleging the railroad polluted the town by storing asbestos contaminated vermiculite at a downtown rail yard. The railroad denies the allegations. (AP Photo/Rick Bowmer, File)