100k or even "permanent" storage is a flawed concept, because that timespan is just too long to account for all possibilities. Nuclear scientist have been advo

100k or even "permanent" storage is a flawed concept, because that timespan is just too long to account for all possibilities. Nuclear scientist have been advocating managed storage of 50 to 100 years instead for quite some time, because there is a chance that (a) we might figure out a better way to separate and then transmute the long lasting fission products to quicker decaying elements, (b) we might come up with better ways to safely store, or (c) we may want to mine the waste for reprocessing the useful uranium and plutonium.