National Museum of Nuclear Science & History
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.
Stanley Levitt worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Gilbert Plass was a Canadian physicist. Plass was born in 1922 in Toronto. He received a B.S. in physics from Harvard University before being hired to work on the Manhattan Project at the Chicago Met Lab, where he worked as an associate physicist.
Mike Cohen worked for the A. S. Schulman Electric Company.