Thesaurus Term/Concept: BALLAST POND
| Identifier | 91120 | 
|---|---|
| Class | MONUMENT TYPE | 
| Status | Preferred | 
| Index? | Yes | 
| Scope Note | A water-filled hole used for the disposal of aggregate originally used as ballast in ships. | 
| Identifier | 91120 | 
|---|---|
| Class | MONUMENT TYPE | 
| Status | Preferred | 
| Index? | Yes | 
| Scope Note | A water-filled hole used for the disposal of aggregate originally used as ballast in ships. |