Two employees were preparing to install a new die in a press. One employee was pulling the spring block off the top of the die to accommodate the shut height of the brake press. When the employee got the bolts out of the block, the die hung up on the guide pins; as the employee worked the block loose, the die freed and came down on the stop block. The other employee's right middle finger was between the stop block and the top of the die, and the fingertip was amputated.