A LARGE ROCK TURNED IN THE PAN LINE, SEVERAL FEET OF THE ROCK WAS STICKING OUT OVER THE HAND RAIL. AS IT WENT DOWN THE FACE IT STRUCK EMPLOYEE PICKING HIM UP FOR 10-15 FT BEFORE HE FELL ON HIS SIDE LANDING ON THE SHIELD TOES, HE WENT TO THEE.R. DIAGNOSED WITH 2 FRACTURED RIBS.