WHILE ROCKDUSTING WITH SPLIT SET ROCKBOLTS AT THE FACE OF THE DECLINE, A ROCK APPROX 6"" BY 6"" FELL FROM THE BACK, STRUCK THE JACK LEG DRILL AND RICHCETED OFF TO STRIKE EE IN THE FRONT OF H IS LEFT THIGH, CAUSING A BRUISE. THIS IS REPORTABLE ONLY BECAUSE DR GAVE HIM A PRESCRIPTION MUSCLE RELAXANT.