This illustration dates to the 1870s and shows a cupola furnace. This type of furnce was the primary method of melting that was used in iron foundries. Henry Bessemer was an English inventor and his invention of a steelmaking process was key to the production of steel from the mid 1800s to around 1950.

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Photo credit: © Ivy Close Images / Alamy / Afripics
License: Royalty Free
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