Quote:
Originally Posted by Tallor
Packed sand does a decent job of stopping radiation. Bricks and concrete are better. Steel is better still, and lead is typically considered the best.
But lead isn't really the most dense. For instance, depleted uranium is significantly more dense (although much more pricey) and could make for thin but powerful shielding.
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My understanding is that depleted uranium
is sometimes used to transport more potent radioactives in reality.