As this history does not pretend to be a technical treatise on the manufacture of steel detailed discussion of the many ways and means adopted by the Corporation to achieve economies would be out of place. But some of them are particularly worthy of mention. One example of economical methods, interesting because of the fact that is was possible only to a company engaged in operations on a tremendous scale, is concerned with distribution of iron ore to its furnaces. Steel, although much alike to the uninitiated, differs greatly in quality and suitability for different uses. The difference lies not alone in treatment during manufacture but in the kind and character of ore used. And a plant that has large orders for a particular kind, or analysis, of the metal, would find itself handicapped greatly if its receipts of ore included a mixture of the many grades often found deposited in the earth in close juxtaposition. The right ore for the right use at the right time means better and cheaper steel. Hence the Corporation maintains in the regions from which it receives its ores well-equipped chemical laboratories for testing and sorting the several varieties of ore. Probably the most important of these is at Hibbing, Minnesota, on the line of the Duluth, Missabe & Northern. As the long ore trains run through Hibbing small samples of the ore are taken out of the cars and subjected to careful analysis. The trains go on their way to Proctor where the extensive yards of the railroad are located, but before they reach that centre the chemical analysis of the ore in different cars has been ascertained and wired ahead, so that the cars composing the train can be sorted and distributed in sidings in accordance with the classification of the ores they contain. At Proctor new trains are then made up and proceed to the ore docks at Duluth where vessels are waiting to convey the ore to Gary, Chicago, or, by further trans-shipment, by rail to Pittsburgh. And each ship gets the kind of ore needed at the furnace to which it is destined. This means not only better and more uniform quality in the finished product; it means a saving of several hundreds of thousands of dollars annually to the Corporation. The Proctor yards themselves are interesting. Stretching two miles with seventy-five miles of track and capable of accommodating 5,400 cars at one time, as many as 469,555 fifty-ton cars of ore have passed through them in one season destined for the Corporation’s hungry furnaces all over the country.