| Clue | Source | Date |
|---|---|---|
| One gets power from these rabbit items on the menu | The Telegraph Toughie | 22 Aug 2018 |
| A number of courses, for starters, in the pipeline or on the backburner perhaps | Irish Times Crosaire | 18 Sep 2017 |
| Subterranean lines | ||
| Carriers under city streets | ||
| Underground network | ||
| Urban utility conduits | ||
| Street-diggers' targets | ||
| Energy providers |