Joseph H. Leopold

F. J. Ogle

Richard S. Claassen

Richard Claassen was a research assistant at the SAM Lab at Columbia University from 1944 to 1946. While there, he built and used fluidic systems to test for unusual leaks in diffuser tubes.

Frank A. Alexander

Frank Alexander worked for Clinton Laboratories at the X-10 Reactor.

Okey B. Ellison

Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.