National Museum of Nuclear Science & History
Olga M. Klicek was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. V. Weisenfluh worked for the Union Carbide & Carbon Corporation.
Raymond W. Leffler served in the 1395th Military Police Company, Aviation.
