Wilbur G. James

Sara B. Chettkow

Sara B. Chettkow was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

George H. Riggenbach

Los Alamos, NM

George Riggenbach was a staff worker at Los Alamos during the Manhattan Project.

L. A. Riden

Y-12 Plant

L. A. Riden worked for the Tennessee Eastman Corporation at the Y-12 Plant.

George Friedman

K-25 Plant

Attended Cornell University.

Electrical EngineerX-10 Graphite Reactor

Oak Ridge, TN

EngineerManhattan Project VeteranMilitary VeteranSpecial Engineer Detachment

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