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National Museum of Nuclear Science & History

Ed Helfenberger

Project StaffOak Ridge, TN

Manhattan Project VeteranProject Worker/Staff
The Chapel on the Hill in Oak Ridge

Ed Helfenberger worked for the Roane-Anderson Company.

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Charles A. Thomas

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Charles Allen Thomas (1900-1982) was an American chemist and industrial leader. Thomas was recruited to join the Manhattan Project in 1942 by General Groves, who offered him a postion as a deputy to Robert Oppenheimer, the director of the Los Alamos Laboratory in New Mexico.

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Lonnie B. Hancock served in the 393rd Bombardment Squadron. 

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Howard Gest worked for Clinton Laboratories at the X-10 Reactor. Gest was one of the scientists who signed Leo Szilard’s petition against the use of the atomic bomb.

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