| Clue | Source | Date |
|---|---|---|
| Money earned from exporting crude oil | The Guardian Quick | 18 Jul 2022 |
| Favourite staff all got up in gold, ready for OPEC? | The Times Cryptic | 03 Jan 2022 |
| Later, old pro distributed crude earnings | The Times Cryptic | 22 Oct 2021 |
| Coinage of the 1973 oil crisis | The New Yorker | 16 Mar 2020 |