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I am a little unclear about typical half-lives of reactor...

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    I am a little unclear about typical half-lives of reactor waste.
    The following is an excerpt from URANIUM INFORMATION CENTRE Ltd:
    http://www.uic.com.au
    Is this just spin, talking about "Forty years after removal from the reactor less than one thousandth of its initial radioactivity remains" and "After being buried for about 1,000 years most of the radioactivity will have decayed" ??

    EXCERPT:
    Waste disposal
    Final disposal of high-level waste is
    delayed to allow its radioactivity to decay.
    Forty years after removal from the reactor
    less than one thousandth of its initial
    radioactivity remains, and it is much
    easier to handle. Hence canisters of
    vitrified waste, or spent fuel assemblies,
    are stored under water in special ponds,
    or in dry concrete structures or casks for
    at least this length of time.
    The ultimate disposal of vitrified wastes,
    or of spent fuel assemblies without
    reprocessing, requires their isolation
    from the environment for long periods.
    The most favoured method is burial in
    dry, stable geological formations some
    500 metres deep. Several countries are
    investigating sites that would be technically
    and publicly acceptable. The USA is
    pushing ahead with a repository site in
    Nevada for all the nation’s spent fuel.
    One purpose-built deep geological
    repository for long-lived nuclear waste
    is in operation in New Mexico, though
    this only takes defence wastes.
    After being buried for about 1,000
    years most of the radioactivity will have
    decayed. The amount of radioactivity
    then remaining would be similar to that
    of the naturally-occurring uranium ore
    from which it originated, though it would
    be more concentrated.
 
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