National Museum of Nuclear Science & History
M. A. Richtmyer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Mathias (“Matthew”) Antone Thennes was born in 1895. He served in WW1 with the 39th Division, 153rd Regiment, in France.
Arthur R. Piccot attended the Bridgeport Engineering Institute. He later served at Ok Ridge to help procure “yellow cake” (a type of powdered uranium concentrate).
John Costa worked at the shop in the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.