National Museum of Nuclear Science & History
Ruth Langley worked for the United States Engineer District Office.
Charles H. Hendren served in the 603rd Air Engineering Squadron.
Quentin V. Larson was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
David Nicodemus (1916-1999) was an American physicist. Nicodemus worked at Los Alamos during the Manhattan Project and witnessed the Trinity Test.
Alvina Petrus was a stenographer and clerical worker at the Chicago Met Lab.
