EMPLOYEE WAS GETTING OUT OF PICKUP TRUCK AND WAS REACHING FOR CLEANING MATERIALS IN A BAG AT THE SAME TIME. HE SLIPPED AND FELL. HE FELT PAIN IN HIS LOWER BACK, THERE WAS NO DAMAGE TOT HE MINI NG OPERATION OR EQUIPMENT, EMPLOYEE SHOULD HAVE USED BETTER BODT POSITIONING BEFORE LIFTING SUPPLIES. NO THER FACTORS WERE INVOLVED.