Abstract: At 9:00 a.m. on May 14, 2023, Employee #1 and Employee #2 were trying to line up a drive sprocket and chain after replacing the sprocket on a chain driven flight conveyor. Employee #1 was using a a 24-inch pipe wrench on the end of the shaft to offset pressure applied by the system, while Employee #2 changed the direction of the ratchet they were using. Four (4) come-alongs had been applied to the chains that drive the conveyor flights to prevent the conveyor from sliding down an incline. While conducting the work, Employee #2 was struck in the head by the pipe wrench. Employee #1 lost control of the ratchet and the pipe wrench continued to rotate with the shaft and struck and struck Employee #1 in the head. Employee #1 was killed and Employee #2 was hospitalized to treat head injuries.