National Museum of Nuclear Science & History
Andrew Welch was a janitor at the Chicago Met Lab during the Manhattan Project.
Watson worked at the 300 Area at Hanford during the Manhattan Project.
Long worked for Stone and Webster Engineering Corporation.
Horace Mahorney was a chemical engineer at the Y-12 plant in Oak Ridge, Tennessee. From September 1943 to November 1945, Mahorney was an operator of the mass spectrometer with Dr.
J. W. Jorden worked for the Tennessee Eastman Corporation at the Y-12 Plant.
