boiling heavy water reactor
graphite moderated pile
graphite moderated nuclear reactor
gas cooled graphite moderated reactor
enriched uranium graphite moderated reactor
deuterum moderated pile
deuterium oxide moderated reactor
deuterium moderated pile low energy
ceramic material moderated reactor
carbon dioxide cooled graphite moderated reactor
beryllium-oxide moderated reactor
beryllium oxide moderated reactor
beryllium moderated reactor
air cooled graphite moderated reactor
water moderated reactor