I read the Wikipedia page but didn't get a great deal of information. From what I gathered, they decided to use a structurally/mechanically unsound abandoned sa

I read the Wikipedia page but didn't get a great deal of information. From what I gathered, they decided to use a structurally/mechanically unsound abandoned salt mine as an 'experimental waste dump', and now there are concerns that if the mine floods, nuclear waste byproducts will get into the ground water? You're probably more acquainted with the issue so perhaps you can fill in the holes here? At any rate, shutting down all German nuke plants because of something like this is akin to shutting down all coal mines because someone held a BBQ and accidentally started a fire.