National Museum of Nuclear Science & History
Kenneth Greisen was an American physicist. He worked on the Manhattan Project at Los Alamos. He was the leader of Group X-1A (Photogoraphy with Flash X-Rays) until it was dissolved in May 1945.
Elrod worked for Stone and Webster Engineering Corporation.
Joseph Mullaney was a staff worker at Los Alamos during the Manhattan Project.
Ross H. Johanson served in the 603rd Air Engineering Squadron.
