NORTH KINGSTOWN, RI-A Rhode Island man was killed last week while working at the Electric Boat Corp. assembly plant here. North Kingstown police said the 31-year-old worker, who was not identified, had been using a transport device to move a section of steel outside. When it started raining, the steel had to be moved back inside. The machinery was not moving as the worker got out. But he became trapped between it and a large door that was being closed. MORE