POURING WHITE HOT STEEL from a Bessemer converter into a ladle for transport to the ingot moulds. The converter is charged with molten pig iron through which air is blown. The air causes the carbon, silicon and other impurities in the iron to burn fiercely so that no fuel is used in the process of conversion. To make pig iron from iron ore, however, large quantities of coke are required and at modern steelworks there is often a battery of ovens continuously at work producing coke from coal.
This colour plate also appeared on the cover of this issue.