National Museum of Nuclear Science & History
T. R. Logan worked for the United States Engineer District Office.
John Wieneke was an American physicist who worked at Los Alamos during the Manhattan Project. Wieneke later worked on the post-war nuclear program at the Nevada test site in the 1950s.
Seymour Ratner was a staff worker at Los Alamos during the Manhattan Project.
S. J. Helfman worked for the J.A. Jones Construction Company.