Mitsui Mining and Smelting Company Limited Provides Production Guidance for the First Half and Second Half of Fiscal 2012

Mitsui Mining and Smelting Co., Ltd. specializes in the production and marketing of non ferrous metals. Net sales (including intragroup) break down by activity as follows: - manufacturing of functional materials (39%) : electrolytic copper foils, battery materials, ceramic products, etc. The group also provides engineering services; - production of non ferrous metals (30.6%): zinc, gold, silver, zinc alloys, etc. Mitsui Mining and Smelting Co also offers non ferrous metals recycling services; - manufacturing of automotive parts and components (12.8%); - other (17.6%). Net sales are distributed geographically as follows: Japan (51.5%), China (13.9%), India (9.8%), Asia (16.7%), North America (5.1%) and other (3%).