National Museum of Nuclear Science & History
John Ryan was a staff worker at Los Alamos during the Manhattan Project.
Thoms Davis was an electrician assigned to work at Los Alamos. Prior to working for the Army Corps of Engineers at Los Alamos from January 1945 to June 1946, Davis worked at the Houston Shipyards.
Robert Harrison was an engineer in the Special Engineering Detachment (SED) in Oak Ridge, Tennessee from August 1944 to August 1945.