Coal

Coal is a fuel that can be found most commonly on Coal Worlds, increasingly common as the world level increases, but in smaller amounts on other world types too. Coal is dropped in item form from coal seams. There is a coal seam for each type of coal listed below.

There are three types of Coal: All three of these coal types can be compacted into compact versions using a Compactor.
 * Soft Coal (Common)
 * Medium Coal (Uncommon)
 * Hard Coal (Rare)

Fuels such as these can be used in a Furnace to generate heat for crafting recipes, or in a Spark Generator to generate spark, for recipes in other Machines.

Hard Coal
(1) Spark cost for compacting the coal. Can not be reduced with the 'Efficient Crafting Epic' skill or by bulk/mass crafting.