How long do spent fuel rods remain dangerously radioactive?

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Tags

1. #years
2. #uranium
3. #radioactive
4. #pools
5. #about
6. #dangerously
7. #after
8. #circulating
9. #generally
10. #though
11. #remain
12. #spent
13. #moved
14. #months
15. #usually
16. #water