National Museum of Nuclear Science & History
A. H. Yohannan worked for the Roane-Anderson Company.
V. N. Hacker worked for the J.A. Jones Construction Company.
James R. Chapman was an engineer working for Stone & Webster when he was recruited to work on the Manhattan Project.
Miguel Romo was a staff worker at Los Alamos during the Manhattan Project.
Mary Kelly was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
