National Museum of Nuclear Science & History
Born in 1903 in Baltimore, Mackie studied civil engineering at Union College in Schenectady, New York.
John Nicklin worked for the United States Engineer District Office.
James Downey was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
C. B. Verbal worked for the Tennessee Eastman Corporation at the Y-12 Plant.