EE WAS WELDING A PLATE ON TOPOF THE 3-DECK SCREEN. AT ABOUT 1855 HE SCREAMED. COWORKER WAS WORKING BELOW HIM AND HE RAN TO SEE WHAT WAS WRONG. HE IN TURN YELLED FOR THE SUPERVISOR. THEY FOUND EE LYING ON THE SCREEN WITH THE WELDING STINGER ON TOP OF HIM. COWORKER THREW THE STINGER OFF, RAN AND TURNED THE WELDER OFF. HE CAME BACK, CHECKED AND FOUND A PULSE. HE THEN RAN AND CALLED 91