150 years of the Shelton Works - page 4
|Early ironmakers used a
production method brought from France. The initial smelt was in a
primitive furnace of a type first seen in this country in 1496 - in
Sussex. The second stage was refining to remove the carbon, and then the
iron was hammered to remove slag (a waste product). The whole process
was not very successful, and resulted in an impure end product.
The process required three main
ingredients: iron ore, charcoal, and water.
Parliament's concern continued to grow, and by the later part of the 16th Century a further act was introduced forbidding the use of anf sound timber for ironmaking which could be suitable for shipbuilding.