Abstract: Employee #1 was the lead worker in loading and securing a quarry crusher structure, a belt conveyor, a motor drive, and a box of wear parts onto a 45 ft long flatbed trailer. During loading he discovered that the motor drive's mount was too long to be legally transported on the highway, so he assigned a coworker to cut the 6 ft long I-beam support at the weld with the crusher structure. As the welder was completing his cut, Employee #1 walked beneath the assembly and was struck on the head by the top end of the falling I-beam. He sustained a serious scalp laceration. It was raining, and Employee #1 had removed his hardhat to put on a raincoat and hood.