What is Black-rock mine?
The coal mine is the black rock on the rear boundary. Clear clutter if you cannot see it. Second floors can span above it.
Published facts
| Fact | Value |
|---|---|
| Where | Back of the plot |
How do you get Black-rock mine?
Walk to the back of your own plot. Buy the mine there when the prompt appears.
How do you use Black-rock mine?
Visit it every login until a miner is visibly working. Do not wall the path shut.
