The steel production and raw materials industry is a whole different world. I am not knowledgable in the area at all but a recent linkedin post by a friend was listing the biggest steel producers by country, I did not recognise any names except Tata from India and Thyssenkrupp from Germany.
Here is a list I found from a quick search, try to guess which country the biggest producers is based in or how many of top 5 you expect to have heard of before opening the link.
https://en.wikipedia.org/wiki/List_of_steel_producers
