http://www.kentucky.com/181/story/793487.html

LITTLE ROCK, Ark. -- Three men killed when an empty gasoline storage tank they were working on exploded in north Arkansas likely died from the impact of the blast, a coroner said Wednesday. The workers were preparing to install a new gauge on the tank at a TEPPCO Partners LP facility when the blast occurred Tuesday, said Rick Rainey, a spokesman for the Houston-based energy storage company. The tank previously had been drained of fuel and cleaned, Rainey said. It was not immediately clear whether the workers were inside or outside of the tank at the time of the explosion, he said. The cause of the blast wasn't immediately clear, White County Coroner David Powell said. The bodies of the three men were discovered outside of the crumpled storage tank and bore no signs of being burned, Powell said. "It was an explosion," he said. "The injuries were simply caused from the concussion of the explosion." All three men worked for C&C Welding of Elizabethtown, Ky. Powell identified the dead as William Decker, 48, of Scottsburg, Ind.; Roy Mathis, 60, of Wheatfield, Ind.; and Stoney Powell, 45, also of Wheatfield. The TEPPCO facility stores diesel and unleaded gasoline for clients, Rainey said. The facility has five tanks with a total capacity of 250,000 barrels, he said.The explosion came as a series of thunderstorms rolled through Arkansas. The National Weather Service at North Little Rock recorded no instances of lightning in the area at the time of the explosion, forecaster Chuck Rickard said.