|Building Type||Bonus Decor|
|Buildings Affected|| Coal Mines|
Adv. Coal Mines
|Bonus Applied||-5% +12%|
|Limit per Building||2|
|Size||2 x 2|
|Reward for Raiding||20|
|Reward for Occupation||76|
- "Raise your coal gathering rate AND receive thanks from the Empire's workers for less time spent in coal mines? It's a win-win!"
- — In-game Description
They cause any nearby Houses to experience a drop in tax rate of -5% .
Each Coal Mine can handle two Coal Bins for a maximum of +24% production.