ArcelorMittal Ruhrort, tapping the 140 t converter

Keywords: arcelormittal, ispat steel, duisburg, ruhrort, ruhrgebiet, industriekultur, industrial photography, industrial, stahlwerk, steel mill, steelworks, ocelárna, Fritz Schupp, industrial architecture, bof shop, metallurgy, kyslíkový konvertor, bof vessel

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