National Museum of Nuclear Science & History
John Black worked for the J.A. Jones Construction Company.
Petersen worked in the 200 West Area at Hanford during the Manhattan Project.
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.
Edmund S. Byczynski served in the 393rd Bombardment Squadron.
