Coal overlay

The coal mini screen shows the coal reserves beneath your city. The coal seams are shown as red and green on a grey background. You will have to build a coal mine close to one of these seams to extract its coal.

The first time you ask for this information, you will have to undertake a coal survey which will cost you one million currency units. After that the information is free to look at again.

Left click on the mini screen to reposition the main window. Toggle overlay mode by pressing 'v' or clicking on the large overlay button.

See also:

- Minimap
- Sports overlay
- Fire overlay
- Health overlay
- Land use overlay
- Pollution overlay
- Power overlay
- Starvation overlay
- Transportation overlay
- Unemployment overlay