Oh I meant specifically in power generation, i.e. using the spent as fuel in "next gen" plants, thereby reprocessing it. The idea of course being that if it produces energy then some of the cost can be offset and that the end result has a much shorter half life.
https://en.wikipedia.org/wiki/Generation_IV_reactor
"Nuclear fuel reprocessing is performed routinely in Europe, Russia and Japan"
https://en.wikipedia.org/wiki/Nuclear_reprocessing