Not only has used #nuclear fuel been stored safely for decades, it can be reprocessed into fuel for the future.
Used fuel safely stored could potentially power us for centuries, via fast breeder reactors. No more mining needed, solving the waste problem at the same time.
The (civilian) nuclear fuel for both power and research/medical purposes is made and processed in certain facilities like #cogema (France) and #urenco (Netherlands).
And you can be quite sure that people and organisations are active in both power generation and research/medicine.