We do have long term solutions. Large low oxygen beryllium copper caskets encased in steel. Drop them into a shaft bored into a mountain. There's other ways, o

We do have long term solutions. Large low oxygen beryllium copper caskets encased in steel. Drop them into a shaft bored into a mountain. There's other ways, of course, but this was the best one I remember reading about; it's expensive but less so than the incidentals of CO2 and particulate release.