National Museum of Nuclear Science & History
Robert van Gemert worked in procurement and supply for Los Alamos during the Manhattan Project. He was also involved in organizing preparations for the Trinity Test.
Jas Howard worked for the United States Engineer District Office.
Edward P. Hayes was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
G. M. Shifley worked for the J.A. Jones Construction Company.