National Museum of Nuclear Science & History
M. A. Ruth worked for the United States Engineer District Office.
Ernest Mekanas was a member of the Provisional Engineering Detachment at Los Alamos. Mekanas was in Los Alamos from 1943 to 1945, working primarily at the post office.
Charles K. Krause was a consultant for the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
