! Extension

! Information

|-

| [[File:Coal Mine Extensions Coal Storage.PNG]]

| The Coal Storage adds 1 Coal per tick

|-

| [[File:Coal Mine Extensions Maintenance Shed.PNG]]

| The Maintenance Shed adds 1 Coal per tick

|-

| [[File:Coal Mine Extensions Timber Tunnel Supports.PNG]]

| The Timber Tunnel Supports Using 1 Plank adds 3 Coal per 2 ticks

|-

| [[File:Coal Mine Extensions Second Headframe.PNG]]

| The Second Headframe adds 2 Coal per tick

|}

[[Category:Buildings]]