MEMBER WAS PUSHING COAL BACK AT NO. 9 STACKER. AS HE WAS BACKING UP THE COAL UNDER HIS RIGHT TRACK BROKE AWAY ALLOWING THE DOZER TO SLIDE OVER THE RETAINING WALL. HE CONTINUED TO WORK THROUGH AUGUST 9, 2002. AFTER HIS SHIFT HE WAS EXAMINED BY A DOCTOR AND BEGAN MISSING WORK.