National Museum of Nuclear Science & History
Kattie Strickland was part of the janitorial staff at Oak Ridge during the Manhattan Project. Unlike the white women whom she worked along side, Ms.
Herbert Potratz was an American chemist. Potratz was born in 1902 in Iowa. He received a B.S., an M.S.
Helen Thomson was a techinician in the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Sam Weissman (1912-2007) was an American chemist. Weissman was born in South Bend, Indiana. He received a B.
