Stock Photo - Glowing hot slag from iron production is tipped from a ladle car into a pit, slag car at the Krupp Mannesmann steelworks, industrial plant Duisburg-Huckingen, Duisburg, Ruhr district, North Rhine-Westphalia

Stock Photo: Glowing hot slag from iron production is tipped from a ladle car into a pit, slag car at the Krupp Mannesmann steelworks, industrial plant Duisburg-Huckingen.

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