Sir Henry Bessemer (Sir Henry Bessemer was an English engineer and inventor, best known for developing the Bessemer process, which was the first inexpensive industrial process for the mass production of steel)

Sir Henry Bessemer was an English engineer and inventor who revolutionized steel production. He developed the Bessemer process, a method that made it faster and cheaper to produce large quantities of steel by blasting air through molten iron. This innovation significantly lowered the cost of steel, enabling its widespread use in construction, transportation, and manufacturing. Bessemer's work marked a major milestone in industrial manufacturing, helping to support the growth of cities and infrastructure during the 19th century. His process remained a key method for steelmaking until more advanced techniques replaced it.