National Museum of Nuclear Science & History
Ruan worked for Stone and Webster Engineering Corporation.
Sieck worked at the 200 East Area at Hanford during the Manhattan Project.
Herbert Potratz was an American chemist. Potratz was born in 1902 in Iowa. He received a B.S., an M.S.
A. F. Aston worked for the Tennessee Eastman Corporation at the Y-12 Plant.
