EMPLOYEE WAS TIGHTENING BOLTS ON THE 4 1/4 CONE CRUSHER. HE WAS USING A WRENCH AND SLEDGEHAMMER. HE INJURED HIS RIGHT SHOULDER WHILE SWINGING THE SLEDGEHAMMER. HE DID NOT SEEK MEDICAL ATTENTIO N UNTIL 9/30/2003. HIS WORK ACTIVITIES WERE NOT RESTRICTED UNTIL HIS SECOND DOCTOR VISIT ON 10/3/2003.