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Commissioned by :
Groupement: Bouygues Travaux Publics Sa., France ; Construções E Comercio Camargo Correa S.A., Brazil ; Construtora Queiroz Galvão S.A., Brazil ; Construtora Andrade Gutierrez S.A., Brazil ; Bilfinger Berger A.G., Germany ; Vinci Construction Grands Projets S.A.S., France ; Alstom Hydro Energia Brasil Ltda., Brasil; Et Bardella S.A. Indústrias Mecânicas, Brasil ;Groupement sélectionné par ACP (short list)