National Museum of Nuclear Science & History
Calvin worked in the United States Engineer District Office.
Millard Sloan was a chemical operator at the Y-12 Plant in Oak Ridge, Tennessee from 19445 to 1947. Sloan was a Tennessee native who served in India with the 12th Air Cargo Re-supply Squadron of the US Army before working at Oak Ridge.
Samuel Allan Kline was a student majoring in physics at the University of Chicago before going to Los Alamos to work as a physicist.
J. D. Ellett worked at the 200 West Area at Hanford during the Manhattan Project.