National Museum of Nuclear Science & History
Louis Oblich served in the Army at Los Alamos during the Manhattan Project.
Ella Tyree was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Greager worked at the 200 West Area at Hanford during the Manhattan Project.
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.
