A worker steers a milling cutter in a pilot mine which is being tested for potential use as a permanent...
A worker steers a milling cutter in a pilot mine which is being tested for potential use as a permanent nuclear waste storage facility, at the salt dome near the northern German village of Gorleben July 2, 2010. The mine is some 840 metre deep and 6,5 kilometre long. REUTERS/Christian Charisius (GERMANY - Tags: ENERGY ENVIRONMENT SCI TECH)