National Museum of Nuclear Science & History
J. R. Maddy worked for the United States Engineer District Office.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Henry Howard Roerkohl was commissioned as a 2nd lieutenant in the QM Corps Reserve on Jan 16, 1940. On Nov 9, 1942 Howard was transferred to the Northwest Service Command (NWSC), located in Whitehorse, Canada in the Yukon Territory.
