National Museum of Nuclear Science & History
Henry worked at the 300 Area at Hanford during the Manhattan Project.
Carl Helmholz (1915-2003) was an American physicist involved with the Manhattan Project. Helmholz was born on May 24, 1915 in Evanston, Illinois.
Paul R. O’Connor was a junior chemist at the University of Chicago Met Lab during the Manhattan Project.
Karl Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
