Abstract: On December 10, 2001, Employees #1 and #2, who worked for different companies, were standing next to a truck delivering roofing materials. The operator of the boom conveyor on the truck was moving it into position to load materials from the truck to the roof on a residential house. There were trees in the area that made moving the boom conveyor to the roof difficult and that contributed to it contacting a 7620-volt power line. Employee #1, who was standing adjacent to the truck, was electrocuted. Employee #2, who was standing nearby, he received an electric shock; he sustained injuries that required hospitalization.