Coal is a common material used for making Torches, as well as Iron Weapons and Armor. While not a particularly rare resource, advanced industry grinds to a halt without a steady supply of Coal.

Coal tiles can start appearing at level 1, often in enough numbers to allow the contruction of a Mineshaft. However, since two Coals are needed to make the two Torches on the Mineshaft, the player will need to dig around a little to make them.