EE WAS ROCK BOLTING IN ENTRY 1A AT 15+20 XCUT OM THE 3RD EAST MAINS WHEN A ROCK FELL OUT OF A SLIP, MEASURING 50'L X 12' W X 2 1/2'H. THE ROCK FELL ONTO ATRS, PINNING EE TO THE MINE FLOOR. EE WAS REMOVED FROM MINE & TRANSPORTED TO HOSPITAL.EE HAS BROKEN VERTEBRAE AND IS RECOVERING FROM SURGERY.