And these mines will add more and more to the State exchequer each year, as will also the mines of the three ranges in Michigan and Wisconsin. For in no part of the world has mining been undertaken on a scale so gigantic as that of the Superior region, and every contrivance known to mining science is being used to increase month by month the mountains of ore which ever fail to satisfy the hungry furnaces of the East. It is predicted by Captain Joseph Sellwood, of Duluth, one of the oldest and greatest of the iron barons, that the time is not distant when the Mesaba range alone will be producing forty million tons of ore a year--as much as all five ranges are producing now. “It will cost over a billion dollars to get this ore to the docks,” said he. “And seven hundred and fifty million dollars more to land it in Lake Erie ports.”--Nearly a two-billion-dollar mining and transportation business for the people of the Lakes to look forward to, and this from a single range! “But will not this tremendous activity exhaust your mines?” I asked of several of these iron barons. “The ore doesn’t go down to China, and it doesn’t extend all over the State. What is the future?” The future! Few have thought of this. There are just at present too many millions of dollars in the making to give one time or inclination to picture the days when only black and silent scars will remain to give evidence of the time when this Northland was one of the treasure houses of the earth. But that time must come. Old mining men say so if you can get them to talk about it, and scientific computations, as far as they go, are proof of it. These computations differ, but they agree pretty generally that there are still between a billion and a half and two billion tons of ore in the Superior district. Within the next five years the ships will be bringing down fifty million tons a year, and there is no reason for believing that this will be the maximum. So it is obvious that the ore of the Lake Superior regions will not last beyond the year 1950 unless new deposits are discovered, or methods are found for the utilisation of immense deposits that cannot now be used. [Illustration: The Record Load Hauled by One Team out of the Michigan Woods, 20,000 Feet.] “Will this event not prove ruinous to a large extent to shipping interests?” I asked G. Ashley Tomlinson, of Duluth, and others closely associated with iron and vessel interests. “To-day nearly half of the total tonnage of the Lakes is from the mines. If this industry becomes practically extinct what will become of the hundreds of ships engaged in the traffic?”