National Museum of Nuclear Science & History
P. F. Finck worked for the Tennessee Eastman Corporation at the Y-12 Plant.
N. N. Tracy worked for the J.A. Jones Construction Company.
Elvin Olsen was a staff worker at Los Alamos during the Manhattan Project.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
