AT AROUND 9:00PM ON 10/13/00 ONE SECTION OF A UHMW LINER CAME OUT OF HP3 (CLAY HOPPER). THIS PLASTIC SHEET WAS PLACED ON THE FLOOR TO THE EAST OF THE CONTROL ROOM. AFTER HAVING PROBLEMS WITH THE FULLER DRYER ALL NIGHT THE OPERATOR WENT OUTTO FIRE THE DRYER AT 5:30AM. WHILE ROUNDING THE CORNER OF THE CONTROL ROOM, HE TRIPPED ON THE PLASTIC & FELL LANDING FACE FIRST ON THE CONCRETE.