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→Deep Impact of Iron
In the 19th century, improvements in blast furnaces, invented by James Beaumont Neilson from Scotland, enabled much cheaper steel to be made. The Bessemer process was soon developed by the 1850s, by Henry Bessemer, which enabled the production of steel to not only be relatively cheaper, but it allowed it to be done more quickly at an industrial scale. Within a half hour, nearly 25 tons of pig iron could be converted to steel. Other forms of steel developed, such as alloy steels that gave greater flexibility to steel. Stainless steel was developed by the early 20th century.
==Deep Impact of IronFerrous Technologies==Earlier developments in iron allowed many changes to occur, such as the growth of irrigation works and cities. New lands were put into agricultural production thanks to the development of iron and steel. However, one major limitation had been the cost of steel production. This only changed by the 1850s, when steel production, using the Bessemer method and other developed steel technologies in the 19th century, allowed the so-called second wave of the Industrial Revolution that took place in the late half of the 19th century.
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