I always liked the idea of vitrifying the radioactive waste before putting it in barrels and putting the barrels into the subduction zones. With the hazardous

I always liked the idea of vitrifying the radioactive waste before putting it in barrels and putting the barrels into the subduction zones. With the hazardous material rendered into chemically inert glass beads it should stay put even if (when) the containers are breached. I'm not sure how practical that is. I presume the radioactive decay will break down the chemical structure of the glass, which will limit the ultimate effective lifetime of the solution