On 23/06/2013 08:56, Brian Gaff wrote:

anyway, I guess we shall see. Trouble is that things in this industry move
slowly at best, and go backwards at worst. I can remember that Fast breeders
were the future in 1962.. erm what happened to those?

They discovered that lithium hydride was more bang per buck so they
don't need anywhere near as much plutonium.