INJURED STATED THAT HE WAS INSTALLING ROOF BOLTS AND A PIECE OF ROCK FELL AND STRUCK INJURED ON THE NECK. INJURED WENT TO THE DOCTOR AND RECEIVED MEDICATION. ALSO HAVING THERAPY. INJURED RETUR NED TO WORK THE NEXT DAY. INJURED HAD ANOTHER DOCTOR VISIT ON 10-2-03. SCHEDULED FOR ANOTHER CHECK-UP ON 10-9-03.