National Museum of Nuclear Science & History
Marle Velde worked for the Kellex Corporation at the K-25 Plant.
Harold Raymond Austin was an American engineer and business executive whose career spanned nearly six decades.
Clark worked in the United States Engineer District Office.
John Brill was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Hymer Friedell was the deputy medical director of the Manhattan Engineer District at Oak Ridge. He worked closely with Robert Stone and Stafford Warren in studying the effects of radiation on the human body.
