Incorporate the fission products into a glass by boiling with nitric acid and melting with iron oxide and phosphoric acid. Cast the glass into large blocks, du

Incorporate the fission products into a glass by boiling with nitric acid and melting with iron oxide and phosphoric acid. Cast the glass into large blocks, dump those into the deep sea. The radiation is shielded, heat is convected away, nothing dissolves, nobody gets hurt, evil terrorists couldn't retrieve the stuff if they tried with both hands. How is this difficult? If we did this with plain spent fuel, the glass would contain plutonium, and the usual professional liars (Nader, Caldicott, ...) would claim that the plutonium and uranium would dissolve over millions of years and give everyone cancer. But with fission products and a time horizon of just 500 years, even that kind of nonsense doesn't have any impact anymore. (And we shouldn't trash plutonium. It's valuable!)