National Museum of Nuclear Science & History
Frank Pratt worked for the J.A. Jones Construction Company.
Leslie Ritner was a member of the Special Engineer Detachment at Los Alamos. He was among the first engineers sent to Los Alamos from Camp Claiborne, Louisiana in late January 1944, serving for two years before being discharged in the spring of 1946.
Evans worked in the United States Engineer District Office.
Francis D. Thornhill served as a captain in the 393rd Bombardment Squadron. He was the navigator on the Straight Flush during the Hiroshima mission.
