Hitofumi Okubo

Sumitomo Metal Mining Co., Ltd. is engaged in the metal business. The Resource segment is engaged in the exploration, development, production and sale of non-ferrous metal resources, and geological survey and civil engineering businesses. The Smelting and Refining segment smelts and sells copper, nickel, ferronickel, zinc, lead, gold, silver, platinum and others, and manufactures and sells stretched copper products and special steel castings. The Material segment manufactures and sells semiconductor materials and functional materials, produces and sells aerated light-weight concrete, chemical catalysts and others. The Others segment is involved in the engineering business, the design, manufacture and construction of environmental conservation facilities, as well as the design and manufacture of machinery and equipment.