" the release of 4.4 pounds of plutonium oxide in powder form in a population center could produce a 100 per cent probability of bone and lung cancer for every person within a distance of 1,800 feet downwind of the release point and a one per cent risk as far as 40 miles downwind..." you get plutonium oxide from plutonium metal, (by oxidation, vitrification, and dissolution ) by oxidation...you just need the right grinder !!!

Hanchen

GIN-PFA Bidirectional Two-way Punch Pin Grinder Grinding Machine Punch Former Lathe Turning Tool

https://www.amazon.com/GIN-PFA-Bidirectional-Two-way-Grinder-Grinding/dp/B07422PRXL