An employee had just moved a large coil of steel next to another coil on a rack using an overhead crane. They unhooked one side of the sling and held onto it with their right middle finger. As they were raising the crane back up, the sling hung up under the coil, building tension; once it released, it quickly jerked the other side of the sling through the coils along with the last joint of the employee's right middle finger. The finger was amputated to that joint.