| 21. | Uranium-235 is an isotope of uranium making up about 0.72 % of natural uranium.
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| 22. | Both are a part of the natural uranium decay chain.
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| 23. | The latter accounts for more than 99 % of the weight of natural uranium.
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| 24. | DU used in US munitions has 60 % of the radioactivity of natural uranium.
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| 25. | "I'd like to clarify : Our policy of energy is based on natural uranium,"
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| 26. | Depleted uranium is a byproduct of natural uranium and about 40 percent as radioactive.
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| 27. | Natural uranium is a mix of several isotopes, mainly a trace amount of U-238.
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| 28. | Unenriched natural uranium is appropriate fuel for a heavy-water reactor, like a CANDU reactor.
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| 29. | It also has about 1.5 tons of natural uranium ore, which has not been enriched.
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| 30. | Natural uranium is about 0 . 7 percent uranium-235.
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