UP Derailed near Utah-Nevada border (Wells, NV) and the freeway was closed for several hours because of clouds of white powder hazardous substance (was aluminum oxide), and the other end of the train was carrying munitions...
https://www.reviewjournal.com/local/local-nevada/i-80-reopens-after-train-carrying-munitions-derails-in-northern-nevada-1690701/
https://www.reviewjournal.com/local/local-nevada/i-80-reopens-after-train-carrying-munitions-derails-in-northern-nevada-1690701/