File:180px-300px-640px-OIL SHALE. IT IS THE KEROGEN IN THIS ROCK WHICH WHEN HEATED TO 900 F., YIELDS OIL - NARA - 552547.jpg
180px-300px-640px-OIL_SHALE._IT_IS_THE_KEROGEN_IN_THIS_ROCK_WHICH_WHEN_HEATED_TO_900_F.,_YIELDS_OIL_-_NARA_-_552547.jpg (180 × 161 pixels, file size: 11 KB, MIME type: image/jpeg)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:16, 9 January 2026 | 180 × 161 (11 KB) | Maintenance script (talk | contribs) | == Summary == Importing file |
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