Sumitomo Metal MiningCorporate Profile21Besshi-Niihama District DivisionToyo Smelter & RefineryNiihama Nickel RefineryShisaka Smelting Co., Ltd.Isoura PlantNiihama CAM PlantNiihama Electronics Co., Ltd.Niiham Research LaboratoriesBattery Research LaboratoriesHishikari MineOhkuchi Electronics Co., Ltd.Ome District DivisionMaterials LaboratoriesShinko Co., Ltd.Osaka BranchHarima RefinerySumiko Kunitomi Electronics Co., Ltd.SMM Precision Co., Ltd.GRANOPT Co., Ltd. (51.0%)Sumiko Energy Materials Co., Ltd.Mitsui Sumitomo Metal Mining Brass & Copper Co., Ltd. (50.0%)Ichikawa Research CenterHead OfficeSumico Lubricant Co., Ltd.N.E. Chemcat Corporation (50.0%)Nippon Ketjen Co., Ltd. (50.0%)MaterialsSegmentMajor Sites ofMaterialsBusinessCôté (30.0%)Morenci (25.0%)Cerro Verde (16.8%)Quebrada Blanca (25.0%)Candelaria (16.0%)Ojos del Salado (16.0%)Nagoya BranchHyuga Smelting Co., Ltd. (60.0%)The location of the head office is shown for each group company in Japan.MineralResourcesSegmentCopperGoldSmelting &RefiningSegmentCopperNickelOtherOther Major Site / Group CompanyFigures in parentheses indicate percentage interest.Companies with no percentage written are 100% owned.
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