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Show Machine Tool Industry The machine tool industry expects ex-pects to produce $450,000 worth of tools this year. First 'Loco' Built "Tom Thumb"- first locomotive built in the United States used gun barrels for boiler tubes. From it to the present streamlined locomotive illustrates the great progress made in steel production. For now, strong, but lightweight steels developed by research and rolled with great skill are available for use in modern transportation facilities, cutting down weight, giving maximum speed and efficiency. |