alloy aluminium anatolia ancient egypt ancient greece ancient rome arsenic blast furnace bloomery british aluminium bronze carbon carbon dioxide carbon monoxide carbon steel cassiterite cast iron charcoal chemical compound chemical plant cinder copper dagger electric smelting and aluminum company england extractive metallurgy finery forge furnace gold history of ferrous metallurgy industrial revolution iron iron age lead limestone list of archaeological periods mace metal metallurgy ohio ore oxidation state oxygen pig iron pyrometallurgy redox reducing agent reverberatory furnace scoria silver slag song yingxing steel stoke-upon-trent sword tailings tanzania tell hammeh tennessee valley authority tin turkey volcanic glass war hammer west africa wiktionary wrought iron zinc smelting