For 10 points, name this process in which jets of air are blown across molten iron to burn off impurities, which revolutionized 19th-century steelmaking.
Robert Durrer developed a large-scale version of this process named for the towns of Linz and Donawitz. Robert Forester Mushet made the products of this process more reliable by adding spiegeleisen. When it was introduced, it replaced a process developed by such men as Johann Magdeburg and Basil Brooke known as "cementation" that produced a (*) "blister" variety of its product. A dolomite refractory lining used to eliminate phosphorus was added to it by Sidney Gilchrist Thomas. Its waste products include silicon, manganese, and carbon oxides, which can form a solid called "slag". For 10 points, name this process in which jets of air are blown across molten iron to burn off impurities, which revolutionized 19th-century steelmaking.
Robert Durrer developed a large-scale version of this process named for the towns of Linz and Donawitz.
the Bessemer process