National Museum of Nuclear Science & History
W. H. Pickett worked for the United States Engineer District Office.
A. M. Monger worked for the Tennessee Eastman Corporation at the Y-12 Plant.
B. P. Gump worked for the Roane-Anderson Company.
M. F. Welch worked for the United States Engineer District Office.
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.