A Utah Railway train of loaded oil and sulfuric acid tank cars heads west from the road's Martin Yard, in Helper, Utah, to Provo. The train is powered by MK50-3 5005, MK50-3 5006, SD50S 6060, SD50S 6064 and MK50-3 5003 - all exotic models! The MK50-3s are rebuilt MK5000C diesels, and Utah owns all six. The SD50S diesels are units built for Australia's Hamersley Iron and shipped back to the United States after they'd replaced them with newer power. The train is rounding the S-curves that follow the Price River at Kyune, just west of the famed "Gooseneck" curve.