Name two iron and steel industries, which have been set up by two different foreign collaborators. Also, name the regions from where coal and iron ore are obtained by the two steel plants named by you.

With reference to the Iron and Steel plant located at Jamshedpur, answer the following questions:

1. From where does the plant get its iron ore?
2. Which river provides water to the township?
3. Name the states that provide its labour force.
4. Which seaport serves the region?

What two advantages do the Vishakhapatnam steel plant have over the other steel plants in the public sector?

Which is the largest mineral-based industry in India? Why is it called a key or basic industry?