File:NuclearFastReactorsSA1205.jpg

Scheme of the underground placement of the sodium–cooled nuclear reactor by

http://www.nationalcenter.org/NuclearFastReactorsSA1205.pdf William H. Hannum, Gerald E. Marsh and George S. Stanford. Smarter Use of Fast-neutron reactors could extract much more energy from recycled nuclear fuel, minimize the risks of weapons proliferation and markedly reduce the time nuclear waste must be isolated. Scientific American, 2005 December, page 87.

The honest use is assumed; attribute the source. For the commercial application, communicate the {[Scientific American]].