co2 from coal fired power stations., page-20

Or...

* Synroc


*** The disposal of nuclear waste has been a controversial issue for decades. Synroc is an innovative solution to dealing with the problem of the long term storage of nuclear wastes that contain radioactive isotopes with long half-lives. It was originally developed in 1978 by Australian geochemist Professor Ted Ringwood and his team at the Australian National University.

Synroc is an advanced ceramic made up of the same types of minerals that have held uranium and thorium naturally in the Earth’s crust for billions of years. Radioactive waste atoms displace some host atoms, and so are chemically bound into a mineral matrix similar to natural rock, held until their radioactivity levels have decayed away.

The original type of Synroc was 57% titanium dioxide (rutile, TiO2) with the minerals hollandite (BaAl2Ti6O16), zirconolite (CaZrTi2O7) and perovskite (CaTiO3). Nuclear waste materials are added to the mixed powdered minerals and the ceramic is formed by heat and high compression. The Synroc is then placed in steel canisters.

All of it:

http://www.powerhousemuseum.com/insidethecollection/2011/08/science-undergroundsynroc/