jan 1, 1856 - Henry Bessemer (1856) In 1856 Henry Bessemer built a refined blast furnace known as the Bessemer converter that made it possible to produce steel cheaply and in large quantities. Steel production rose sharply, and steel quickly began to replace iron in tools, machines, and structures that required high strength.
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Date:
jan 1, 1856
Now
~ 169 years ago