National Museum of Nuclear Science & History
Wilcox P. Overbeck was a research associate and instrumentation designer at the Chicago Met Lab. He was responsible for calling out the neutron count when Chicago Pile-1 went critical on December 2, 1942.
Kopanski worked at the 200 East Area at Hanford during the Manhattan Project.
Raymond W. Leffler served in the 1395th Military Police Company, Aviation.
