The Solid Fueled Firebox is a required component of the Steam Boiler added by Railcraft. This Firebox will allow a boiler to be run off of solid fuels, such as Coal Coke. For the different sized boilers, it will need one Firebox, four Fireboxes, or nine Fireboxes. Almost anything that can burn in a Furnace can burn in a Solid Fueled Firebox.
