National Museum of Nuclear Science & History
W. A. Cone worked for the J.A. Jones Construction Company.
Lee Romero was a staff worker at Los Alamos during the Manhattan Project.
Fred D. Butler served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Laggin’ Dragon.
George Placzek was a Czech physicist. He was born in Brno, Moravia, which was then part of Austria-Hungary but today is in the Czech Republic.