A worker moves a refrigerated railcar along the tracks at the Union Pacific Intermodal Terminal in Oakland, California U.S., on Wednesday, Jan. 23, 2013. Union Pacific Corp., the largest U.S. railroad by sales, posted higher fourth-quarter earnings than analysts estimated as shipments of chemicals and automobiles climbed. Photographer: Ken James/Bloomberg via Getty Images
{"Image ImageDescription": "A worker moves a refrigerated railcar along the tracks at the Union Pacific Intermodal Terminal in Oakland, California U.S., on Wednesday, Jan. 23, 2013. Union Pacific Corp., the largest U.S. railroad by sales, posted higher fourth-quarter earnings than analysts estimated as shipments of chemicals and automobiles climbed. Photographer: Ken James/Bloomberg via Getty Images", "Image Copyright": "2013 Bloomberg"}