| 31. | It also has about 1.5 tons of natural uranium ore, which has not been enriched.
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| 32. | The government bought the uranium ore from Vitro and used it in the Manhattan Project.
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| 33. | This stash turned out to be the bulk of the German stock of uranium ore.
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| 34. | A small amount of uranium ore was produced.
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| 35. | Traces of plutonium, especially plutonium 239, occur naturally on Earth in some uranium ores, Savage added.
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| 36. | As one of the world's leading exporters of uranium ore, Australia strictly regulates mining and exports.
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| 37. | The Oklo uranium ore deposits are the only known sites in which natural nuclear reactors existed.
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| 38. | The group concluded that lack of uranium ore and low priority had doomed the Japanese effort.
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| 39. | A possible explanation therefore was that the uranium ore had operated as a natural fission reactor.
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| 40. | In the 1950s and 1960s, private firms processed most uranium ore mined in the United States.
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