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  2. Oklo - Wikipedia

    en.wikipedia.org/wiki/Oklo

    Oklo is a region near Franceville in the Haut-Ogooué Province of ... Some of the mined uranium was found to have a lower concentration of uranium-235 than expected, ...

  3. Uranium-235 - Wikipedia

    en.wikipedia.org/wiki/Uranium-235

    Uranium-235 (235 U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a nuclear chain reaction. It is the only fissile isotope that exists in nature as a primordial nuclide. Uranium-235 has a half-life of 703.8 million years.

  4. List of countries by uranium reserves - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    World uranium reserves in 2010. Uranium reserves are reserves of recoverable uranium, regardless of isotope, based on a set market price. The list given here is based on Uranium 2020: Resources, Production and Demand, a joint report by the OECD Nuclear Energy Agency and the International Atomic Energy Agency. [1] Figures are given in metric ...

  5. Uranium ore - Wikipedia

    en.wikipedia.org/wiki/Uranium_ore

    The highest grade uranium deposits are found in the Athabasca Basin in Canada, including the two largest high grade uranium deposits in the world, Cigar Lake with 217 million pounds (99,000 t) U 3 O 8 at an average grade of 18% and McArthur River with 324 million pounds (147,000 t) U 3 O 8 at an average grade of 17%. These deposits occur below ...

  6. Iran has further increased its stockpile of uranium enriched ...

    www.aol.com/news/iran-further-increased...

    Additionally, the report says Iran has still not provided answers to the nuclear watchdog’s years-long investigation about the origin and current location of man-made uranium particles found at ...

  7. Uranium mining - Wikipedia

    en.wikipedia.org/wiki/Uranium_mining

    Uranium-235, the fissile isotope of uranium used in nuclear reactors, makes up about 0.7% of uranium from ore. It is the only naturally occurring isotope capable of directly generating nuclear power. While uranium-235 can be "bred" from 234 U, a natural decay product of 238

  8. Iran gives 'detailed answers' to UN inspectors over 2 sites ...

    www.aol.com/news/iran-gives-detailed-answers-un...

    Iran said Wednesday it gave new details to the United Nations about two sites near Tehran that inspectors say bore traces of manmade uranium, part of a wider probe as tensions remain high over the ...

  9. Uranium - Wikipedia

    en.wikipedia.org/wiki/Uranium

    Uranium-235 was the first isotope that was found to be fissile. Other naturally occurring isotopes are fissionable, but not fissile. [citation needed] On bombardment with slow neutrons, uranium-235 most of the time splits into two smaller nuclei, releasing nuclear binding energy and more neutrons.