| Clue | Source | Date |
|---|---|---|
| Crude stockpile | Universal | 14 May 2023 |
| Crude resource | Universal | 30 Oct 2020 |
| National resource | Newsday | 22 Apr 2018 |
| OPEC member stat | Newsday | 11 Jun 2017 |
| Store in the Middle East? | New York Times | 11 Dec 2015 |
| Canadian asset | LA Times Daily | 18 Apr 2015 |
| Store in the Middle East? | ||
| Canadian asset | ||
| The Gulf of Mexico has a big one | ||
| Middle East asset |