National Museum of Nuclear Science & History
William Steadman was a guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
C. L. McCallum worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Harold Urey (1893-1981) was an American physical chemist and winner of the 1934 Nobel Prize in Chemistry.
Carpenter worked at the 200 East Area at Hanford during the Manhattan Project.
O’Connell worked in the 200 West Area at Hanford during the Manhattan Project.