Crews from Union Pacific Railroad worked to clear a six-car oil train derailment that leaked some crude into a ditch Friday in northern Colorado. State and local emergency officials determined that one car of the 100-car train was leaking after the 8 a.m. derailment near LaSalle, about 45 miles north of Denver. The cause of the derailment was under investigation, said Micki Trost, a spokeswoman for the Colorado Division of Emergency Management. Crews had contained the spill to a ditch away from any waterways, Trost said. The amount of oil spilled wasn’t immediately known, but a vacuum truck was brought in to suck up the spill. Tanker trucks lined up nearby to transfer the oil. According to The Greeley Tribune ( http://tinyurl.com/m96ows9 ), the train was loaded in nearby Windsor with Niobrara crude and was bound for New York. Niobrara oil comes from the Niobrara shale formation in Colorado, […]