Superman #220

Superman and Superboy find their way to the ruins of the old Fortress of Solitude in the Arctic with John Henry Irons to check on the missing Eradicator. Unfortunately, the Eradicator still believes Krypton’s sons are rogues, and he’s prepared to take care of that problem! Superman and Superboy talk about what just happened recently to them, how they were controlled and forced to attack their friends. John Henry AKA as Steel was investigating the ruins of the destroyed Fortress of Solitude, when Eradicator who was trapped was released and was acting berserk.