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National Museum of Nuclear Science & History

Frederick Horlander worked for the Tennessee Eastman Corporation at the Y-12 Plant.

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Harry Truman

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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.

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Stanley G. Steinke was a second lieutenant in the 393rd Bombardment Squadron of the  509th Composite Group.

W. T. Mann

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W. T. Mann worked for the Tennessee Eastman Corporation at the Y-12 Plant.

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