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National Museum of Nuclear Science & History

J. A. Vavro

SergeantTinian Island

Wendover, UT
509th Composite GroupManhattan Project VeteranMilitary Veteran
North Airfield at Tinian Island.

J. A. Vavro served in the 509th Headquarters.

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W.J. Hatfield

Oak Ridge, TN

Hatfield worked in the United States Engineer District Office.

Ralph R. Tison

Tinian Island

Ralph R. Tison served in the 393rd Bombardment Squadron.

John K. McArthur

K-25 Plant

Attended the Unviersity of Washington.

Harry Truman

Washington, DC

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.