Two Missing in Oil Rig Blast Ships and helicopters are searching for two oil rig workers who disappeared when an explosion rocked a gulf oil rig off the coast of Louisiana and set it on fire, Coast Guard officials said. No one has been confirmed dead. Earlier reports by the Coast Guard that as many as 15 people were unaccounted for were resolved as the workers were located. Three helicopters and two rescue boats are scouring the water looking for the missing crew members, according to Ed Cubanski, chief of the U.S. Coast Guard response. The Coast Guard said that a Black Elk Energy Co. oil and natural gas platform caught fire after workers using a torch cut a line that had 28 gallons of oil in it, causing an explosion. Black Elk's CEO, John Hoffman, said that the wrong tool was used in cutting the line. Contract workers should have used a saw instead of a torch, which caught vapors and caused the blast. The workers were employees of Grand Isle Shipyard, not Black Elk, he said. All of the individuals were men. The rig was offline for maintenance and was scheduled to go back online for production later this month. There were 22 people on board at the time of the explosion, according to the Coast Guard. An oil sheen a half mile long and 200 yards wide has spread over the water surrounding the platform, which sits in 56 feet of water. The platform was shut down for the work at the time of the accident, Cubanski said.