Union Pacific's UGDEO, nicknamed 'The Acid Train' arrives for a crew change at North Yard in Salt Lake City. The UGDEO hauls sulphuric acid from Kennecott Copper's smelting operations at Garfield,... (more)

With the Wasatch Range in deep blue shadows, a unit train of KCCX tank cars roll slowly through UP North Yard in Salt Lake City. This train of sulfuric acid will cycle every few days between the K... (more)