|Cost|| 3500 · 12|
1 · 16
|Maintenance (Inactive)||30 (15)|
|Size||Atop coal deposit|
|Production per minute||4 tons|
|Cost per ton ()||7.5|
|Material cost per ton ()||5|
This building allows the utilization of coal deposits as a source of coal to power manufacturing processes. Not only does it produce twice as much coal as the Charcoal burner's hut but it takes up zero land space.
The coal that this produces is more expensive per ton (12.5 gold/ton) than that from a charcoal burner's hut, and the mine must also be replenished from time to time which adds an additional maintenance cost. However, since land usage is very limited during the end-game, it's recommended to convert as many charcoal burner's huts to coal mines as possible.