Abstract: At approximately 9:00 a.m. on February 11, 1992, Employee #1 was operating a lumber stacker. He had stopped the stacker because of an interruption in the flow of lumber from the sorter. He and one of the stickermen left the stacker and went to assist two other workers. The second stickerman and the relief stacker operator remained at the stacker controls to operate the lumber transfer chains. When the problem was corrected, Employee #1 did not return to his operating position and the relief operator/stickerman started the machine. The stacker completed a partial cycle and stopped. The coworkers investigated the malfunction and discovered that Employee #1 was caught between a rotating arm on the lumber stacker and a vertical I-beam. His head was fractured, and he was killed.