| Clue | Source | Date |
|---|---|---|
| Controversially release gas? (5) | ||
| Extract by injection into rock | The Telegraph Quick | 21 May 2023 |
| Extract by injecting liquid into rock | The Telegraph Quick | 22 May 2022 |
| Controversial oil well verb | LA Times Daily | 30 Oct 2021 |
| Ice-skating comedy duo half | Universal | 21 Aug 2019 |
| Pressurise for gas release | The Telegraph Quick | 17 May 2019 |
| Ice-skating comedy duo half |