National Museum of Nuclear Science & History
Halpern worked in the United States Engineer District Office.
Armand C. Covatto served in the 603rd Air Engineering Squadron.
M. B. Dieson worked at the 300 Area at Hanford during the Manhattan Project.
Alvina Petrus was a stenographer and clerical worker at the Chicago Met Lab.
George Maronde was a security guard at the University of Chicago Metallurgical Lab. He stood guard outside Stagg Field when Chicago Pile-1 went critical on December 2, 1942.
