21. The following year the mill equipped four enormous electric furnaces that phased out the open-hearth furnaces. 22. Today, electric furnaces produce almost 40 percent of all the steel made in the United States. 23. Elemental phosphorus is produced by an electric furnace . 24. Birmingham Steel operates mini-mills, which use electric furnaces to melt scrap metal and mold it into steel. 25. During World War II, to keep up with escalating demand, two 50 ton electric furnaces were installed. 26. The Corporation maintains electric furnace units at the burial grounds at Villivakkam, Nungambakkam, GKM colony, and Arumbakkam. 27. The main problem with heating a greenhouse as opposed to a building that has solid electric furnaces . 28. Mini-mills use electric furnaces to melt the scrap and mold the liquid into steel bars and coils. 29. An electric furnace has exploded at a nickel plant, killing one Indonesian employee, a company official said Wednesday. 30. Hyundai currently has an electric furnace mill that produces 3.5 tons of steel beams and other construction products.
