LOWELL, Mass. (AP)
 Lowell police say a 
50-year-old man was seriously burned in an explosion while working in an
 underground tank at a gas station.
Police say the man was cutting a pipe in the 
underground tank at Mahoney's Gas Station on Friday morning when the 
explosion occurred. Authorities say the worker became engulfed in flames
 and was rescued from the tank by a co-worker.
The man suffered serious burns to his head, face, 
arms and legs and was brought to Massachusetts General Hospital. His 
name hasn't been released.
Police say the workers had turned off the gas to a 
pump they were fixing in the tank. Authorities say there appears to have
 been some residual gas that was ignited by a pipe-cutting tool.
The Occupational Safety and Health Administration is investigating.
Source:http://www.abc6.com