EE WAS OPERATING OFFSIDE FLETCHER RRII ROOF BOLTER IN THE FIRST CUT INBY CROSSCUT OF THE #3 ENTRY. HE WAS PROCEEDING TO DRILL THE FIRST PATTERN BOLT HOLE WHEN A PIECE OF UNSECURED DRAW ROCK ME ASURING 3' X 2' X 5"" CLOSE TO THE FIRST CORNER BOLT CAME LOOSE. THE ROCK STRUCK EE ON THE BACK OF HIS RT LEFT RESULTING IN MULTIPLE FRACTURES TOLOWER LEG AND ANKLE.