National Museum of Nuclear Science & History
W. H. Griffin worked for the H. K. Ferguson Company.
Born in 1903 in Baltimore, Mackie studied civil engineering at Union College in Schenectady, New York.
Ledbetter worked in the 200 East Area at Hanford during the Manhattan Project.
Ethaline Hartge Cortelyou was a junior chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
