National Museum of Nuclear Science & History
H. B. Malter worked for the Edenfield Electric Company.
Halloran worked in the United States Engineer District Office.
Stanley Krzyck was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Susan Zagaria was a laboratory technician in the health division at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
