EE WAS WORKING THE NIGHT SHIFT (20:00 TO 08:00) ARC-GOUGHING 4 INCH S.S. ANCHORS FROM INSIDE OUR 12 FT DIAMETER KILN WITH 3 CO-WORKERS. DURING THE PROCESS ALL WELDERS WERE ARC-GOUGING AT THE S AME TIME CREATING A FLASHBACK ON THE BACK SIDE OF THEIR WELDING HELMETS. HE RECEIVED FLASH BURN TO BOTH EYES.