National Museum of Nuclear Science & History
Helene Stark was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Walter Groeger worked in the shop at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Sarah Archer worked as a nurse at Oak Ridge during the Manhattan Project. She was responsible for monitoring the radiation levels of the Calutron operators at the Y-12 Plant.
Harry S. Truman (1884-1972) was the 33rd President of the United States of America. Truman first learned of the Manhattan Project after the death of President Roosevelt in April of 1945, when he relinquished his role as Vice President and took the oath of office as the next president of the United States.
