Industries like iron and steel are located near the places which have abundant
Industries like iron and steel are located near the places which have abundant of Coal and Iron .These are termed as Coastal Regions. As iron and coal were depleted the need for imported coal and iron increased. This made factories to shift to newer areas in the coastal regions. The coastal factories depended on imported iron or coal and lowered cost of transportation from factory to port.
Iron ore and coal producing regions have a bi-directional relationship. The wagons that transported coal to iron ore regions would return empty so un-economical use. Hence the wagons would return with iron ore towards the coal producing regions. Thus in both these areas iron and coal industries flourished. E.g: Pittsburg-Lake Superior, Bokaro-Rourkela.