National Museum of Nuclear Science & History
William Jacob was a staff worker at Los Alamos during the Manhattan Project.
Robert Krohn was born in Milwaukee, Wisconsin December 26, 1919. He attended the University of Wisconsin and graduated from the Electrical Engineering School in June of 1942.
Sergeant Frank Karcher was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Cummins worked in the United States Engineer District Office.
Leon J. Vrana served in the 320th Troop Carrier Squadron.
