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The X-10 Graphite Reactor is a decommissioned nuclear reactor at Oak Ridge National Laboratory in Oak Ridge, Tennessee. Formerly known as the Clinton Pile and X-10 Pile, it was the world's second artificial nuclear reactor (after Enrico Fermi's…

Designed and built in ten months, X-10 was a graphite reactor that used neutrons emitted in the fission of uranium-235 to convert uranium-238 into a new element: plutonium-239, the highly radioactive substance that was the key to the development of…

Following the conclusion of World War II, American citizens were filled with a sense of national pride and moral weightiness. In this photograph, similar feelings are evoked in the dramatic framing of the three Boy Scouts with their wind-swept United…