National Museum of Nuclear Science & History
Frank Harrison worked for the Tennessee Eastman Corporation at the Y-12 Plant.
T. T. Metten worked for the United States Engineer District Office.
Waldemar Nielsen (1917-2005) worked on the postwar surveys of Hiroshima and Nagasaki in Japan. Nielsen was born in Greensburg, Pennsylvania.
Daniel J. Keefe was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
