I was just working today with activated aluminum, 28Al, with a 2.3 minute half-life. A 50 mg total mass (stable 27Al plus activated 28Al) sample, and you wouldn’t want to hold it in your hand, it was reading tens of R/hr on contact. An equal mass of natural uranium, however, you could hold in your hands for the rest of your life and it wouldn’t hurt you. Big difference between a 4.5 billion-year half-life and one of a few minutes.
Uhm .... why?? You working for Putin BTW? :)
Maybe making some pellets to be shot from umbrellas?