Fire In The Valley Of The Sun

Train derailment:

Union Pacific spokesman Tim McMahan, who said the train was en route to Phoenix from Tucson, explained that two of the three tanker cars on the ground under the bridge contained cyclohexanone. The third contained a rubber material. "None are reported leaking, and no tank cars were involved in the fire," he said. According to the National Center for Biotechnology Information, cyclohexanone is a colorless oily liquid that is both flammable and an irritant. It's mostly used for the production of nylon.

The cars that burned for hours were carrying lumber, some of which fell into the lake.