Follow
Most importantly, we *already* deal with extremely toxic waste and store it in deep geologic repositories. And it's safe there, for millions of years.
Fun fact #1: chemical waste *never* loses toxicity, unlike nuclear that loses it pretty fast.
Fun fact #2: Anti-nuclear Germany has *two* of them, and they store arsenic, mercury and cyanide waste, which are for example byproduct from manufacturing modern insulation materials.