National Museum of Nuclear Science & History
Kopanski worked at the 200 East Area at Hanford during the Manhattan Project.
August “Gus” Knuth was a millwright and carpenter who helped construct Chicago Pile-1. He was present on December 2, 1942 when the pile went critical in the first self-sustaining chain reaction in history.
J. E. Brock worked for the Roane-Anderson Company.
