> The problem may arise in a very long time due to water molecules progressively entering and exiting the enclosure during thousands of years. Or you know, aft

> The problem may arise in a very long time due to water molecules progressively entering and exiting the enclosure during thousands of years. Or you know, after a couple of decades because the storage containers really don't like salt water and start to corrode. And as recovery of the waste was not foreseen initially, it gets really difficult and expensive now. https://en.wikipedia.org/wiki/Asse_II_mine https://en.wikipedia.org/wiki/Asse_II_mine