A ROOF BOLTER OPERATOR WAS WALKING BESIDE THE ROOF BOLTING MACHINE THAT HAD JUST TRAMMED INTO POSITION TO BOLT A FRESHLY MINED FACE. AS HE WALKED UP TO THE MACHINE A PIECE OF ROCK (2'X 2'X 3"") FELL OUT OF THE MINE ROOF FROM BETWEEN THE PERMANENTLY INSTALLED ROOF BOLTS. THE ROCK FELL STRIKING HIM ON THE SIDE OF THE LEFT FOOT, CAUSING A LACERATION AND FRACTURE TO HIS LITTLE TOE.