Coal

Powder
Coal is a dark grey powder material found mainly in large piles in the Coal Pits. It is a flammable solid, and can sustain a flame for quite a while before burning away.

Coal is fairly easy to dig through with most explosives, although its propensity to catch fire and remain a hazard for a solid chunk of time can be a nuisance.

Coal Veins
Coal Vein is a solid, compacted form of Coal, which is much less flammable than the powder form. It comprises a fairly high portion of the terrain composition in the Coal Pits, and is a lighter grey colour, similar to the colour of the grey Rock that is also readily available in the same area.