The Steelworks was John Henry Irons's laboratory located in Metropolis. History The Steelworks was John Henry Irons's laboratory located in Metropolis. Residents John Henry Irons Natasha Irons Kelex Superwoman See Also Appearances of Ironworks Location Gallery: Ironworks Categories: Suicide Slum Locations New Earth Locations Prime Earth Locations Milky Way Sol Earth United States of America Metropolis Laboratories
