Types: Energy Sources
| Name | Level | Player Level | Item | Quest required |
|---|---|---|---|---|
| Coarse Coal Mine | 1 | 1 |  Duff |
- |
| Coal Mine | 2 | 20 |  Bituminous Coal |
- |
| Coal Mine Core | 3 | 40 |  Anthracite |
- |
| Volcanic Coal Mine | 4 | 60 |  Coke |
- |
| Lava Coal Mine | 5 | 80 |  Refined Coke |
- |
