METAL WORKING.
Early Iron Furnace. Operations of Lord Dudley, Abraham Darby, and
Henry Cort. Neilson’s Hot Blast. Great Blast Furnaces of Modern Times.
The Puddling Furnace. Bessemer Steel and the Converter. Open Hearth
Steel. Regenerative Furnace. Siemens-Martin Process. Forging Armor
Plate. Making Horse Shoes. Screws and Special Machines. Electric
Welding, Annealing and Tempering. Coating with Metal. Metal Founding.
Barbed Wire Machines. Making Nails, Pins, etc. Making Shot. Alloys.
Making Aluminum, and Metallurgy of Rarer Metals. The Cyanide Process.
Electric Concentrator.