Masashi (University of Tokyo, Japan) Nakano & Roland (Sweco Infrastructure AB, Norrkoping, Sweden) Pusch 
Containment of High-Level Radioactive and Hazardous Solid Wastes with Clay Barriers [PDF ebook] 

One of the principal objections to or problems with the use of nuclear fuel is that a proven method for safe disposal of spent nuclear fuel has yet to be established. The central focus of most schemes underway to dispose of these high-level radioactive wastes relies on clay-based buffers and barriers to isolate spent fuel canisters in borehole