National Museum of Nuclear Science & History
Henry Mouk was a staff worker at Los Alamos during the Manhattan Project.
John Weil was a member of the Special Engineer Detachment serving at Los Alamos from early 1943 through the end of the war.
J. E. Grumbach worked for the Edenfield Electric Company.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
