Half a kilometre beneath the forests of northern Germany, in an old salt mine, a nightmare is playing out. A scheme to dig up previously buried nuclear waste is threatening to wreck public support for Germany’s efforts to make a safe transition to a non-nuclear future. Enough plutonium-bearing radioactive waste is stored here to fill 20 Olympic swimming pools. When engineers backfilled the chambers containing 126,000 drums in the 1970s, they thought they had put it out of harm’s way forever. But now, the walls of the Asse mine are collapsing and cracks forming, thanks to pressure from surrounding rocks. So the race is on to dig it all up before radioactive residues are flushed to the surface. It could take decades to resolve. In the meantime, excavations needed to extract the drums could cause new collapses and make the problem worse.
New Scientist 29th Jan 2016 read more »