National Museum of Nuclear Science & History
Halpern worked in the United States Engineer District Office.
R. V. Weisenfluh worked for the Union Carbide & Carbon Corporation.
Kenneth Peterson was a cryptographer for the 390th Air Service Group in the 509th Composite Group from September 1944 to November 1945.
Baldwin Sawyer is an American metallurgist. After graduating from Yale with a B.S. in Physics in 1943, Sawyer joined the Manhattan Project at the University of Chicago.
Cathcart worked at the 200 East Area at Hanford during the Manhattan Project.
