National Museum of Nuclear Science & History
Beachley worked for Stone and Webster Engineering Corporation.
David Halsey worked for the J.A. Jones Construction Company.
Sanford McDonnell was a mechanical engineer with the Special Engineering Detachment at Los Alamos from April 1944 to April 1946.
J. A. Rorick worked for the Tennessee Eastman Corporation at the Y-12 Plant.
W. J. Dowis worked at the 200 West Area at Hanford during the Manhattan Project.