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Uraanitutkimuksia 1
Annual discharges
of spent fuel from the worlds reactors total
about 10 500 metric tonnes of heavy metal
(t HM) per year,

...The technology to extract
uranium from sea water has only been
demonstrated at the laboratory scale, and
extraction costs were estimated in the mid-
1990s at US$ 260/kgU (Nobukawa, et al., 1994)
but scaling up laboratory-level production to
thousands of tonnes is unproven and may
encounter unforeseen difficulties.

Recycling of
plutonium reduces the natural uranium needs by
approximately 15%, as one tonne of MOX fuel
requires recycled plutonium from 6 tonnes of
spent fuel.