Why can’t we dump nuclear waste in the same place we mine nuclear fuel?
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Short answer: natural uranium is solid and doesn’t easily dissolve in water. Nuclear waste often contains liquids and gases and stuff that dissolves in water, and we’re worried it will get into the ground water and hurt people.
One proposed way to fix this problem is to “vitrify” the nuclear waste, basically turning it into solid blocks of glass that won’t leak or erode, and can be safely buried in an old mine shaft.
Interesting link: https://en.m.wikipedia.org/wiki/Geomelting
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