Subsequently, in 1351, the construction and executive works of the development plan to reach the capacity of 1,900,000 tons of steel per year began with the construction of blast furnace number 2 and the development of various departments of agglomeration, coking, steelmaking, rolling, etc. And the construction operation of the cast iron complex was completed in 1357. Lack of raw materials See also: value chain, megacorporation, and vertical integration. In the past years, Isfahan Iron Smelter has faced a shortage of raw materials such as iron ore, concentrate, pellets, and coal, which has reduced the company’s production to half of its nominal capacity.