National Museum of Nuclear Science & History
Frei worked for Stone and Webster Engineering Corporation.
William Kann was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. F. Conkling worked for the J.A. Jones Construction Company.
Jack J. Coppola served in the 393rd Bombardment Squadron.
Robert Martens was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
