Chicago Pile-1 was the first artificial nuclear reactor. On 2 December 1942, the first human-made self-sustaining nuclear chain reaction was initiated in CP-1 during an experiment led by Enrico Fermi.
Pupin Hall at Columbia University
One of at least 29 experimental piles that were constructed in 1942 under the West Stands of Stagg Field. Each tested elements incorporated into the final design.
Carpenter Augustus Knuth, in the process of jointing a wooden block for the timber frame
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 arti
Workers in the Graphite Reactor use a rod to push fresh uranium slugs into the reactor's concrete loading face.