MAIN EAST - CUTTING STONE HIGH FOR FUTURE 72"" BELT DRIVE. PUTTING HANGER IN FOR MINE CABLE AND WATER HOSE. ROCK FELL OUT HITTING TOP OF HARD HAT & PUSHING IT DOWN ON FOREHEAD, CAUSING LACERA TION. DID NOT INVOLVE RULES & REGULATIONS, MINE EQUIPMENT OR MINE SYSTEM, TRAINING OR EMPLOYEE ATTITUDE OR CLOTHING (HARD HAD LESSENED THE INJURY); DID INVOLVE JOB SKILLS AND PROFICIENCY.