THE EE WAS IN THE PROCESS OF ROOF BOLTING WHEN A PIECE OF DRAW ROCK FELL (1 1/2'LONG, 1 1/2'WIDEX 3""THICK). THE EE HAD HIS HAND ON PINNER & WAS GOING TO PUSH SELF AWAY WHEN THE ROCK FELL HITTI NG HIM ON LT. HAND, LACERATING MIDDLE FINGER. 20SUTURES WERE REQUIRED.