Recycling used nuclear fuel - The Orano la Hague site has been recycling 96% of nuclear materials in used nuclear fuel into new fuel for decades. The remaining 4% nuclear waste is vitrified in canisters, which then require storage for about 300 years, significantly less than the storage time required for unprocessed used nuclear fuel.

Originally from La Hague channel on YouTube https://www.youtube.com/watch?v=V0UJSlKIy8g Reposted here just to make sure this educational video survives any silly YouTube policy changes.