Rio Tinto and Sumitomo Metal Mining sign Definitive Agreement for Winu Project joint ventureContributed by: Business WireLogoImagesSumitomo Metal Mining Director, Managing Executive Officer, and General Manager of the Mineral Resources Division Hideyuki Okamoto and Rio Tinto Copper Chief Executive Katie Jackson sign the Winu joint venture agreements in Perth.TagsNatural ResourcesOther Natural ResourcesMining/MineralsSumitomo Metal Mining Co
