EE WAS USING A BAR TO CLEAN A CHUTE AT THE CRUSHER TO DISLODGE PLUGGED MATERIAL. THE BVAR BOUNCED OFF A ROCK AND BEGAN TO FALL DOWN THE CHUTE-THE EE CAUGHT THE BAR WITH HIS LEFT HAND AND FELT HIS SHOULDER PULL AS HE DID SO. EE WAIVED MEDICAL TREATMENT UNTIL THE FOLLOWING MORNING ON 9-4-02