Oklo was natural nuclear reactor about 1.8 billion years ago in Gabon, West Africa.
Thirteen nuclear reactors were discovered along a 200-metre uranium mine bed.
Through a quirk of nature, concentration of U-235 were high enough to permit nuclear fissions to occur.
Scientists think these natural reactors could have functioned intermittently for a million years. The average...
Operation Orchard was an Israeli airstrike on a target in the Deir ez-Zor region of Syria in 2007. The Google Earth Arial shows the Syrian nuclear reactor before it was destroyed.
read more here: http://en.wikipedia.org/wiki/Operation_Orchard
From the Wikipedia: Three Mile Island is the location of a nuclear power station which on March 28, 1979, suffered a partial core meltdown. The Three Mile Island Nuclear Generating Station sits on the island in the Susquehanna River in Dauphin County, Pennsylvania, near Harrisburg, of area 3.29 sq. km (814 acres).
HIFAR (High Flux Australian Reactor) was Australia's first nuclear reactor. It was built at the Australian Atomic Energy Commission (later ANSTO) Research Establishment at Lucas Heights.
Based on the DIDO reactor at Harwell in the UK, it is cooled and moderated by heavy water, and the fuel is enriched uranium metal. There is also a graphite neutron reflector surrounding the core. It is u...
(Wikipedia) On December 2, 1942, under the direction of the brilliant Enrico Fermi, the world's first self-sustaining nuclear chain reaction took place in the world's first nuclear reactor, Chicago Pile-1, shortened as CP-1, built on a racquets court under the abandoned west stands of the Alonzo Stagg Field stadium on the University of Chi...