An employee was un-pinning a part from a shipping crate that would be lifted out of the crate by an overhead crane. The pin consisted of both a pin and a sleeve. The pin was removed, however the sleeve remained in place. The employee then used her finger to help push out the pin sleeve. As the sleeve cleared the crate, the part abruptly moved upward due to the upward tension and caused a shearing impact to the employee's left ring finger. The employee sustained a fingertip amputation with an open fracture.