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National Museum of Nuclear Science & History

John Carroll

Project StaffHanford, WA

Manhattan Project VeteranProject Worker/Staff

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Charles J. Miller

Oak Ridge, TN

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George F. Jenkins

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Herbert M. Parker

Research & Development/300 Area

Herbert M. Parker (1910-1984) was a British-American medical physicist. He worked at Chicago, Oak Ridge, and Hanford during the Manhattan Project, and is perhaps best known for inventing the rep (a precursor of the rad) and helping develop the rem to measure radiation dosage.