National Museum of Nuclear Science & History
Elizabeth Younghanse worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cornelius Ridner was a staff worker at Los Alamos during the Manhattan Project.
Ruth H. Anderson was a staff member at Los Alamos during the Manhattan Project. Her husband, Ralph Larsen, worked at Los Alamos as a machinist.