EMPLOYEE WAS OPERATING A CONTINUOUS MINER ON THE LOGAN'S FORK MMU 002-0 SECTION WHEN A PIECE OF ROCK FELL FROM BETWEEN BOLTS. THE ROCK MEASURED 9"" X 12"" X 4"" THICK. THE ROCK STRUCK HIM ON THE RIGHT WRIST RESULTING IN A LACERATION REQUIRING 8 SUTURES. MANAGEMENT WAS NOT AWARE UNTIL 11/19.