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.
R. B. Williams worked for the Union Carbide & Carbon Corporation.
Wisner worked for Stone and Webster Engineering Corporation.
Dietrich worked in the United States Engineer District.
