Coke Coal is an item introduced by the Railcraft mod. It is an improved piece of coal that is used in Tunnel Bores, furnaces, and Blast Furnaces.
When used in a Blast funace, it provides twice as much power as charcoal and therefore burns for twice as long making it a better option than charcoal for an established player. Coke Coal is produced by putting Coal into a Coke Oven.
Railcraft is no longer in the latest versions of Voltz.