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Henry Bessemer files a patent on his new steel working technique so other businessmen cannot copy him.
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The bessmer process is brought to the factories and mills.
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John Bessemer makes a new successul steelworking area.
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Robert Mushet invented tungsten steel in 1868.
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Sidney Gilchrist creates a new process called the Thomas-Gilchrist process, which is based of the bessemer process.
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