Most aluminium foundries use either electric resistance or gas heated crucible furnaces or reverberatory furnaces. Modern furnace types include electric arc furnaces (EAF), induction furnaces, cupolas, reverberatory, and crucible furnaces. Roasting and reverberatory furnace smelting dominated primary copper production until the 1960s. Equipment for pyroprocessing includes kilns, electric arc furnaces and reverberatory furnaces. The roasting process is generally undertaken in combination with reverberatory furnaces. The furnace is charged with slag, scrap iron, limestone, coke, oxides, dross, and reverberatory slag. Both reverberatory furnace and electric furnace can be used. By 1852 Satsuma and Saga had reverberatory furnaces to produce the iron necessary for firearms. After reverberatory and rotating furnaces the recovery boiler was on its way. A second reverberatory furnace at Tsumeb remained inactive, pending renovation. This improved operating conditions within the reverberatory furnace. Sometimes the reverberatory furnace rotated and thus was called a "revolver". Hagi also contains a reverberatory furnace which has been designated a World Heritage Site. It was one of a number using the Australian patented Reverberatory Refuse Incinerator Company invention. Reverberatory and crucible furnaces are common for producing aluminium, bronze, and brass castings.