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National Museum of Nuclear Science & History

Harold Hasenfus

EngineerOak Ridge, TN

Chicago, ILK-25 Plant
Manhattan Project VeteranMilitary VeteranSpecial Engineer Detachment
Harold Hasenfus Listen to Harold Hasenfus’s Oral History on Voices of the Manhattan Project

Harold Hasenfus was part of the Special Engineer Detachment during the Manhattan Project and worked at the University of Chicago's Metalurgical Laboratory and at the gaseous diffusion plant in Oak Ridge. In Chicago, Hasenfus worked at a pilot plant that was constructed to assist in the design of the B Reactor in Hanford for the production of plutonium.

Harold Hasenfus’s Timeline
1943 Joined the Manhattan Project at Oak Ridge as part of the Special Engineer Detachment.

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