Two oil barges pushed by a tugboat slammed into a railroad bridge in Vicksburg, Mississippi, on Sunday, causing one to leak crude oil into the Mississippi River, the U.S. Coast Guard said. Officials used an "absorbent boom" to contain the undetermined amount of oil that leaked into the river after the collision, which occurred shortly after midnight and damaged both barges, Lieutenant Ryan Gomez said. The barge that is leaking was holding 80,000 gallons of light crude oil, he said.