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  1. Textoris, Steven D. [Other]; Bermúdez-Lugo, Omayra [Other]

    Conflict minerals from the Democratic Republic of the Congo : global tungsten processing plants, a critical part of the tungsten supply chain

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    Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2014

    Published in: United States Geological Survey: USGS fact sheets ; 2014,3069

  2. Killiches, Franziska [Other]

    Sorgfaltspflichten in den Lieferketten von Zinn, Tantal, Wolfram und Gold

    Hannover: BGR, 2014 ; Online-Ausg.

    Published in: Commodity topnews ; 46

  3. Lyster, Olivia [Author]; Smith-Roberts, Ashley [Author] ; Traore, Massaran [Other]; Mondlane, Salvador [Other]; Maiela, Elton [Other]; Gbenosa, Rufus [Other] Bundesanstalt für Geowissenschaften und Rohstoffe

    The implementation of due diligence in 3TG supply chains : the cases of Burkina Faso, Mozambique and Nigeria - [As at March 2022]

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    Hannover (Germany): Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), [2022]