The radioactives would disappear back into the magma from which they came. What the world needs now is a way. We need a way to turn radioactive wastes into wealth. And I believe I know the way. Make coins out of it.
Radioactive money has certain obvious advantages.
A healthy economy depends on money circulating fast. Make it radioactive and it will certainly circulate. Verifying the authenticity of money would become easy. Geiger counters, like pocket calculators before them, would become both tiny and cheap due to mass production. You would hear their rapid clicking at every ticket window.