Bessemer process
The Bessemer process is a way of steel production that uses a machine called a bessemer converter to produce steel cheaply. The Bessemer converter uses air to oxidize impurities in pig iron as well as control the amount of carbon in the iron.
Bessemer Process Media
Bessemer converter, Kelham Island Museum, Sheffield, England (2010).
Johan Albrecht de Mandelslo described the Japanese use of the Bessemer process.
William Kelly is credited with experimenting with a similar process before Bessemer's patent.
Bessemer converter at Högbo Bruk, Sandviken.
Bessemer furnace in operation in Youngstown, Ohio, 1941.