After the reckless destruction of South Pacific atolls during hydrogen bomb testing the USA buried thousands of tonnes of radiactive material in a blast crater in the Marshall Islands…it was “sealed” temporarily with this 18 inch thick concrete dome. This was never intended to be permanent and now the cracks are beginning to show. See Independent article below.
This is typical of the time when leaders thought nothing was as important as acquiring a nuclear detterent! It is reminiscent of the horrible Windscale mess of metal silos rusting in the salty, seaside wind and crumbling concrete tanks which formed the temporary dump for some of the dangerous waste from the UK hydrogen bomb program. Zero care or thought for the future, only blind pursuit of a short term goal.