EE WAS OPERATING A D9L DOZER ON THE RAW COAL STOCK PILE, WEATHER FOGGY. WHEN HE STARTED TO PUSH THE COAL, HE TRIED TO ADJUST THE C.B. RADIO HE NOTED HE HAD GONE TOO FAR ON THE PILE. HE TRIED TO PUT THE DOZER IN REVERSE GEAR, BUT COULD NOT, THE SEAT BELT WAS IN BACK OF THE SHIFTER. HE WAS NOT WEARING THE SEAT BELT.