National Museum of Nuclear Science & History
John Riddle was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
W. L. Brewer worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Schopp worked at the 200 West Area at Hanford during the Manhattan Project.
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.
Shea worked for Stone and Webster Engineering Corporation.