EMPLOYEES WERE REPLACING A BELT WIPER. WHILE REMOVING THE WIPER IT BECAME STUCK. A PRY BAR WAS USED TO DISLODGE STUCK PART. THE PRY BAR BEING USED BY A SECOND EMPLOYEE SLIPPED CAUSING THIS EMP LOYEE TO STUMBLE. HE FELL INTO THE INJURED EMPLOYEE CAUSING HIM TO FALL INTO BELT STRUCTIRE, INJURING HIS HEAD.