Evolution of steelmaking processes share, in the global steel production.
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<span class="int-own-work" lang="en">Own work</span><br>From the International Iron and Steel Institute data + <a rel="nofollow" class="external text" href="http://www.midrex.com/uploads/documents/MDX%20STATS%202012%207-3-13Final.pdf">Midrex data</a>