National Museum of Nuclear Science & History
T. H. Lackey worked for the Edenfield Electric Company.
L. H. Kornman worked for the Union Carbide & Carbon Corporation.
George Meyers was a glassblower at the SAM Laboratory at Columbia University. He was only a teenager, but had a talent for glass blowing by hand that was needed by Columbia's scientists.
Apple worked at the 200 West Area at Hanford during the Manhattan Project.