Abstract: On May 10, 2011, Employee #1 was part of a crew that was assigned to pressure wash a drilling rig structure that was mounted a Ford, Model Number F-450, work truck. It was determined that the work truck needed to be relocated closer to the water supply before pressure washing could begin. The truck was located in a tight alleyway, between the back mud tanks and the reserve pit. As Employee #1 stood near the corner of a box storage tank, holding the truck's washer hoses, a coworker put the truck in reverse and began backing up. During movement of the truck, the coworker became distracted and pinned Employee #1 between the truck and open-top tank. Employee #1 was killed as a result of internal damage. The accident investigation determined that no spotter was used during the maneuvering of the vehicle.