Abstract: At approximately 10:45 a.m. on July 17, 2015, Employee #1 was walking on a beam. An air-driven oil pumping unit controlled the movement of beam through the pumping unit that regulated airflow into the system. He walked on the beam from a fixed ladder to the tie off point (loop line) on a rig located at the opposite end of the beam. While walking on the beam, the air-driven oil pumping unit engaged and the system's cylinder lifted, causing the beam to move upward quickly. Employee #1 was bucked off the beam and fell approximately 17 ft, striking his head and body against the ground and he was killed. Employee #1 had on a safety harness, but his lanyard was not connected to an anchor point.