| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 99 | DD | MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00] {4} |
| DIG 110 | DD | .~ Characterized by the provision of more than one active zone [G21C-5/18] {2} |
| DIG 112 | | .~.~ Wherein one zone is a superheating zone [G21C-5/22] |