“The European Union is trying to speed up thinking on the issue by demanding that member countries submit by August individual plans on how to deal with [nuclear] waste. … Switzerland has identified two areas, Zurich Northeast and Jurassic East, to be investigated as possible sites.” (http://uk.reuters.com/article/2015/06/19/us-nuclear-waste-idUKKBN0OZ1A020150619)
There is understandable nervousness about using the latter to park nuclear waste.
“The improper mix in the [nuclear waste] barrel, including the wrong sort of kitty litter used to absorb liquids, sparked a chemical reaction causing it to heat up and generate gases that dislodged its lid, spewing radioactive materials.” (http://uk.reuters.com/article/2015/03/27/us-usa-nuclear-new-mexico-idUKKBN0MN0C920150327)
The ‘right’ sort of kitty litter is commonly used to mop up nuclear waste.
“ONR [Office for Nuclear Regulation] is considering whether to take legal action over AWE’s [Atomic Weapons Establishment’s] failure to make 1,000 drums of hazardous radioactive waste safe. AWE promised in 2007 to repackage and reduce the waste by February 2014, but has not done so.” (http://www.theguardian.com/environment/2014/oct/02/uk-nuclear-bomb-factories-rapped-by-watchdogs-over-radioactive-waste)
The three environmental Rs: reduce, repackage, radioactive.