National Museum of Nuclear Science & History
J. J. McPeake worked for the H. K. Ferguson Company.
Ruan worked for Stone and Webster Engineering Corporation.
Ernest Mekanas was a member of the Provisional Engineering Detachment at Los Alamos. Mekanas was in Los Alamos from 1943 to 1945, working primarily at the post office.
Barger worked in the United States Engineer District Office.
