National Museum of Nuclear Science & History
Margaret Strombeck was a swtichboard operator at the Metallurgical Laboratory in Chicago during the Manhattan Project.
R. H. Snyder worked for the Fercleve Corporation.
Milton Levenson (1923-2018) was an American chemical and nuclear engineer. Levenson was born in St. Paul, Minnesota in 1923 to Harry and Fanny Levenson.
Stanley Robertson was a mechanical engineer in the Special Engineer Detachment serving at Oak Ridge, Tennessee.