In our series of historical pics that look like they were taken on a movie set but are 100% real life is the experimental floor of the High Flux Beam Reactor (HFBR) at Brookhaven National Lab circa 1964, prior to the installation of research equipment.
According to BNL, the mission of the HFBR was to provide a source of neutrons for multidisciplinary scientific research in materials science, chemistry, biology, and physics. The HFBR achieved criticality on October 31, 1965. It was permanently closed in 1999.
Photo: BNL