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Ah, 1 in 100 does indeed sound quite risky. I assumed it was much better than that.
Even transporting waste via rail or road requires a container that would survive any conceivable surface level collision. If you apply that philosophy to a space launch... well you looking at a very uneconomical ratio of container to waste, even if rocket launches were thousands of times more likely to be successful.
Uses vast amounts of energy, even more if you want it out of earths orbit.
Isn't the chance of a rocket launch going bang something like 1 in 100?