EMPLOYEE WAS PULLING A HOSE WHEN THE HOSE GOT STUCK ON A ROCK AND HE PULLED AND STRAINED HIS SHOULDER. THE EE CONTINUED TO WORK AND DID NOT REPORT THE INJURY OR SEEK MEDICAL ATTENTION UNTIL 7-22-02. IT IS UNDETERMINED IF THIS INCIDENT IS A REPORTABLE INCIDENT DUE TO THE FACT THE EE DID NOT LOSE ANY TIME OFF, AND HE TOOK NO MEDICATION.