1ft across, 5ft deep cylinder of concrete. There's radioactive stuff in a box under each one of those. The extra thick concrete lids help shield from the radioactivity.
1ft across, 5ft deep cylinder of concrete. There's radioactive stuff in a box under each one of those. The extra thick concrete lids help shield from the radioactivity.
1ft across, 5ft deep cylinder of concrete. There's radioactive stuff in a box under each one of those. The extra thick concrete lids help shield from the radioactivity.