National Museum of Nuclear Science & History
Enareo Serna was a staff worker at Los Alamos during the Manhattan Project.
Ryan worked at the 100-B Area at Hanford during the Manhattan Project.
Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
L. L. Kallestad worked for the United States Engineer District Office.
