DURING A BLOW BAR CHANGE IN THE IMPACT CRUSHER, EMPLOYEE WAS STANDING NEXT TO THE ROTOR. THEY HAD CHANGED ONE SET OF BLOW BARS AND WERE GETTING READY TO MOVE THE ROTOR TO THE NEXT SET. CO-WORK ER MOVED THE WEDGE OUT. VICTIM SLIPPED AND FELL ONTO THE ROTOR. THE IMBALANCE OF THE ROTOR PULLED HIM DOWNWARD AND CRUSHED HIM.