A railcar carrying 60,000 pounds of Dyno Nobel ammonia nitrate, a chemical fertilizer that also can be used to make explosives, left Cheyenne full and arrived two weeks later in California empty. (Jimmy Orr, Cowboy State Daily) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Nearly a year after 30 tons of ammonium nitrate went missing on a train ride from Cheyenne to an old salt mining town in California, the Federal Railroad Administration (FRA) is still investigating where and how the explosive fertilizer vanished. “The FRA investigation is still being finalized,” a spokesman with the U.S. Department of Transportation’s FRA told Cowboy State Daily in an...