There were 2 crews of 2 welding the ring on the shell at the same time. The affected EE was wearing a welding PAPR while EE was welding, but had the shield up while EE did the fitting work. As EE fitted the iron, the other crew continued to weld about 6 feet to the left. On June 10th EE woke up with eye irritation. EE sought medical attention and was suffering from welding flash.
U.S. Mine Safety and Health Administration