 
      Cebrian River
| Site: | Sheercliff quarry | 
| Landform: |  Plains | 
| Difficulty: | 5 | 
| Risk Level: | |
| Skills: |  Extracting - 10 | 
Task groups
 Extraction
Extraction
| Ratio | Task | Result | Difficulty | Duration | Components | 
| 100% |  Extract clay |  | 1 | 00:01:40 | |
| 100% |  Extract marl |   | 2 | 00:02:30 | |
| 100% |  Extract slate |   | 3 | 00:05:00 |