> it's easy to store (literally kitty litter)
I showed your comment to someone who is currently writing their PhD on how to store nuclear waste safely. I barely understood half of what they said in the following rant, but they referenced the situation of the Sellafield site several times.
You realize people in the 1950s were less careful than now?
I swear I'm not trolling: do you mind asking them about simply dumping it (in leaded concrete barrels etc) in the deep ocean?
https://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_... makes it seem not such a big deal