Abstract: At approximately 10:30 p.m. on August 15, 1991, Employee #1, a machinist for Northrop, was tooling a 600 lb aluminum part on a Cincinnati milling machine. He was using an overhead gantry crane to position the part. After milling one side of the part, Employee #1 turned it to mill the other side and one of the blocks that the part was positioned on slipped. The part moved and the tip of Employee #1's right middle finger was sheared off between the table and the part. The lead man on the first shift had advised Employee #1 to get another man to help him when moving the part but Employee #1 didn't follow this instruction.