Using thorium does not eliminate the problem of long-lived radioactive waste

Using thorium does not eliminate the problem of long-lived radioactive waste. Fission of
thorium creates long-lived fission products including technetium-99 (half-life of over 200,000
years). Without reprocessing, thorium-232 is itself extremely long-lived (half-life of 14 billion
years) and its decay products will build up over time in irradiated fuel. Therefore, in addition to
all the fission products produced, the irradiated fuel is also quite radiotoxic. Wastes that pose
long-term hazards are also produced at the “front end” of the thorium fuel cycle during mining,
just as with the uranium fuel cycle.

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