Thesaurus Term/Concept: AIR RAID PRECAUTIONS SIGNAL BOX
| Identifier | 140680 |
|---|---|
| Class | DEFENCE OF BRITAIN |
| Status | Preferred |
| Index? | Yes |
| Scope Note | A brick built railway signal box, usually with a reinforced correct roof, designed to minimize the effects of blast damage from aerial bombardment and thus protect the signalling equipment. |