I'd just print up the Wikipedia article on Pebble Beds unless you were going for serious in-depth material. And by that I mean getting ready to write a paper on the subject, and even then this article has plenty of useful information on the subject. The article in question can be found here: en.wikipedia.org/wiki/Pebble_bed_reactor
Black Aeronaut Technologies Group
Aerospace Solutions for the discerning spacer
"But first, let's test it on the penguin."
"Meep?" O.o
Black Aeronaut Technologies Group
Aerospace Solutions for the discerning spacer
"But first, let's test it on the penguin."
"Meep?" O.o