National Museum of Nuclear Science & History
J. E. Grumbach worked for the Edenfield Electric Company.
Winston was born in April, 1921 in Washburn, WI (where his father was the mayor) and graduated from Washburn High School, Washburn, WI in 1939.
Aylworth worked in the United States Engineer District Office.
John H. Martens was a research associate and chemist at the University of Chicago Met Lab and a member of the Special Engineer Detachment at Oak Ridge.