THE EMPLOYEE WAS WATERING THE ENTRANCE ROAD TO THE QUARRY USING A WATER TANK TRUCK. THE TRUCK WAS TRAVELING ON A DOWN HILL GRADE TOWARDS THE SCALES AND SCALEHOUSE. HE SWERVED INTO AN EARTHEN E MBANKMENT TO AVOID COLLIDING WITH A TRIAXLE TRUCK WHICH WAS BACKING UP OFF THE SCALES BECAUSE IT WAS OVERLOADED. THE ACCIDENT CAUSED THE TRUCK TO OVERTURN. HE WAS WEARING A SEATBELT WHICH WAS