National Museum of Nuclear Science & History
H. F. Zimmerman worked for the J.A. Jones Construction Company.
Augustus “Gus” Kinzel was an American metallurgical engineer. He graduated at age eighteen from Columbia College, and earned a PhD in metallurgical engineering from the University of Nancy in France.
Collins worked for Stone and Webster Engineering Corporation.
Calvin S. Shepherd worked on the Manhattan Project at Los Alamos, NM and the Trinity Site.
G. E. Johnson worked for the United States Engineer District Office.