National Museum of Nuclear Science & History
Harold Seward worked for the Roane-Anderson Company.
C. L. Henningsen, Jr. worked for the Tennessee Eastman Corporation at the Y-12 Plant.
John Tempka (1923-2017) was an American engineer. Tempka was born in Boydsville, Ohio. He was studying at the University of Detroit when he was recruited to join the U.
Lew Kowarski was a Russian-born French physicist. He worked as part of the team that discovered that neutrons were emitted in the fission of uranium-235 in the 1930s, setting the groundwork for the use of nuclear chain reactions in the design of the atomic bomb.
