An employee was removing a roller weighing approximately 1000 pounds from the laser inspection lathe using a spreader bar with two wire-rope slings. The employee was using the lifting device and attaching the cable strap sling to the two journals of the roller so that she could use the hoist to move the roller to a box. When she raised the hoist to make the sling taut, her right index finger was caught between the sling and the roller. The employee suffered an amputation of her index finger to the distal knuckle.