National Museum of Nuclear Science & History
Richards worked at the 100-D area at Hanford during the Manhattan Project.
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.
George Ponton served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.