WHILE WALKING A PORTABLE OXYGEN-ACETYLENE TORCH DOWN FOUR STEPS, EMPLOYEE THOUGHT HE HAD PLACED THE TORCH SET ON THE WALKWAY BELOW STEPS, WHEN IN FACT, THE EMPLOYEE PLACED TORCH SET ON THE BOT TOM STEP. AS THE EMPLOYEE REMOVED HANDS FROM TORCH SET, THE TORCH SET FELL. AS TI FELL THE HANDLE BECAME CAUGHT IN THE EE'S WELDING JACKET, CAUSING HIS HEAD TO BE PULLED FORWARD ONTO TORCH SE