farriers open portable furnace. burning coal in the furnace

anthracite ash ashtray blacksmith blower burnt carbon carbonation cast coal combustion craft craftsmanship equipment fan farrier fire fireplace flame flue fly forge forging furnace glow glowing grate handcraft handmade heat hot industrial iron metal metallurgy metalwork molten natural nitriding oxidation oxygenate phenomenon place preheat profession refining shop sparks stove temperature temporary turbo work