 DOSCO's manufacturing complex at Trenton continued much as before, producing railway cars and wheels, as well as various steel products; the complex was consolidated under the name Trenton Industries Ltd. at some point.During World War II, management of the complex was taken over by the federal government for producing naval gun mounts as well as artillery and naval shells, just as it had done during World War I.Following the war, DOSCO closed the steel rolling mills and bolt and rivet factory at Trenton, focusing its steel production at the much larger plant at Sydney.