The richest iron mines in the world are located south of Lake Superior, but there are no coal deposits in this region, and coal is necessary for the manufacturing of iron and steel. As it was cheaper to ship the ore to the coal than to carry the coal to the ore, there were men who, as early as 1860, saw that iron and steel could be manufactured with profit in Buffalo. Though blast furnaces were built from time to time, the industry did not attract great attention until 1899. In that year the Lackawanna Iron and Steel Company, of Scranton, Pennsylvania, moved to Buffalo and built an immense metal-working plant. This plant is south of the city and extends several miles along the shore of Lake Erie. The company has built a ship canal over half a mile long, which the largest lake vessels can enter. On one side of this canal are hundreds of coke ovens and the storage grounds for coal; on the other side are the ore docks, a row of huge blast furnaces, and the steel works with their numerous mills, foundries, and workshops. In the coke ovens millions of tons of soft coal are every year turned into coke, which is really coal with certain things removed by heating. This coke is used in melting the iron in the blast furnaces--so called because during the melting strong blasts of air are forced into the furnaces. These furnaces are almost a hundred feet high, are made of iron, and lined with fire brick. Tons of coke, limestone, and iron ore are dropped in from above by machinery, and the intense heat of the burning coke melts the iron, which sinks to the bottom of the furnace while the limestone collects the impurities and forms an upper layer. At the bottom of the furnace there are openings where the fiery-hot liquid runs off into molds, or forms, in which it cools and hardens. The waste matter, called slag, is also drawn off at the bottom. More coke and ore are added from above, and the smelting goes on night and day without interruption until the furnace needs repair. After the iron has been separated from the ore, it is taken to the foundries where it is made into steel rails and many other kinds of iron and steel goods. Other iron and steel companies have sprung up in Buffalo, and the city and its vicinity is now manufacturing enormous quantities of pig iron, steel rails, engines, car wheels, tools, and machinery. [Illustration: THE ELECTRIC BUILDING]