INDUSTRIAL STEELMAKING Prior to 1857, steel was available in small quantities produced by either the cementation or crucible processes, which restricted its use. But Sir Henry Bessemer invented a process of enabling molten pig-iron to be turned into steel by blowing air through it in a tilting converter, which came to be known as the Bessemer process. This enabled the production of large amounts of good quality steel at inexpensive rates – a huge leap for modern civilization. (Pictured) An…