I found it interesting that several (including the Russian made Alazan-5) say they are safe for use in densely populated areas, with a "probability of safe use for population, not less than 0.99999." I guess they don't need no steenkin' safe distances! The Alazan-5 also introduces a new type of recovery, which I'll call intentional in- flight rekitting:
The rocket can be safely used over densely populated areas due to body crushing into small fragments after the seeding is over.
I've done that, but not intentionally!
So, take a look-see. I surfed them with scripts blocked so I missed some things. Let me know if you find anything interesting.