National Museum of Nuclear Science & History
E. C. Harshbarger worked for the Roane-Anderson Company.
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.
Dyer worked for Stone and Webster Engineering Corporation.
