Only a handful of countries have the expertise and technology for nuclear reprocessing, in which spent nuclear fuel rods from power stations are chopped up and boiled in acid to extract uranium and plutonium for reuse in a reactor. The by-product is a concentrated form of vitrified nuclear waste that is as nasty as it sounds.
Err, no. Vitrified waste sounds vastly more nasty than it actually is.
\”Vitrified\” means \”made into glass\” (yes, glass really is made of metal oxides). Glass is the most stable substance we know of pretty much. The solution to nuclear waste is exactly to vitrify it and stick it at the bottom of an old mine for a couple of thousand years.