EE WHILE HE WAS BENDING A ROOF BOLT TO GET INTO THE HOLE IN THE ROOF A PIECE OF ROCK FELL STRIKING HIM ABOVE THE WRIST. CAUSE OF THIS INJURY WASNOT CUTTING DOWN THE BINDER COMPLETELY & OBSERVI NG POSSIBLE LOOSE TOP. COMPLIANCE WITH RULES/REGA FACTOR, PROTECTIVE EQUIP. NOT A FACTOR, MINER PROFICIENCY A FACTOR, MINING EQUIPMENT/SYSTEMS NOT A FACTOR.