MINER ALLEGES HE SUSTAINED WORK-RELATED INJURY (CLEARING A ROCK OUT OF THE FEEDER...THREW ROCK WEIGHING 85/100 LBS.) POSSIBLE HERNIA. MINER DIDNOT REPORT INCIDENT FOR 5 OR 8 DAYS TO MANAGEMEN T PERSONNEL AND WAS TREATED BY HIS FAMILY PHYSICIAN (UNAUTHORIZED TREATMENT). MINER SIGNED OFF ON REPORTING PROCEDURE AT ORIENTATION RECEIVED UPON HIRE.