EE WAS OPERATING A TRUCK WHICH WAS LOADED WITH SLUDGE. HE ROUNDED A SHARP TURN AND AS HE WAS PARTIALLY ON A SET OF SCALES, THE TRUCK STARTED SPINNING AND SLID SIDEWAYS. THE REAR WHEELS SLID OV ER A 3' DROP AND THE TRUCK TURNED OVER. THE WEATHER WAS SLEET, RAIN AND SNOW MIXED AT THE TIME OF THE ACCIDENT.