National Museum of Nuclear Science & History
W. H. Zimmer worked for the United States Engineer District Office.
Sylvia Warshaw was a Polish-American who worked as a research assistant in the chemistry division of the Chicago Met Lab.
John Weil was a member of the Special Engineer Detachment serving at Los Alamos from early 1943 through the end of the war.
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
