National Museum of Nuclear Science & History
Marvin Tetenbaum was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Born in 1903 in Baltimore, Mackie studied civil engineering at Union College in Schenectady, New York.
Attended Rensselaer Polytechnic Institute.
W. L. Ginkel worked for the Tennessee Eastman Corporation at the Y-12 Plant.