A FATAL ACCIDENT OCCURRED ON OR NEAR THIS CLAIM WHEN A BULLDOZER OVERTURNED ON A STEEP GRADE. ACCORDING TO WHITNESSES THE INDPENDENT CONTRACTOR BECAME OVERLY AGGRESSIVE. ATTEMPTING TO PUSH A B OULDER DOWN A HILL LOSING CONTROL OF THE DOZER. INVETIGATES INDICATE THE DRIVER WAS NOT WEARING A SEAT BELT AT THE TIME OF THE ACCIDENT.