National Museum of Nuclear Science & History
Tracy worked for Stone and Webster Engineering Corporation.
Nathan Ballou (1919-2016) was an American chemist. He was born in 1919 in Rochester, Minnesota. In 1941 he received a bachelor’s degree from the Duluth State Teachers College (now the University of Minnesota Duluth).
Johnston worked at the 300 Area at Hanford during the Manhattan Project.
Carl Neumann worked for the United States Engineer District Office.
