In England coal, lead, copper, tin and minerals were available in surplus, but but till 18th century the purposeful identity of iron was not known. For the purpose of industrial growth the demand of iron could not be fulfilled. The ancient system of iron extraction was labourious and costly. By iron melting the minerals of iron gave pure liquified element form. By iron ore extraction, the seperation of complete iron was difficult. The machines made of iron were heavy and they used to get rusted. In order to overcome such difficulties, Industrial Revolution allowed discovery of many techniques by which the iron and steel industry underwent a revolution.
