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The mining technologies that Mitsui Kinzoku developed at the Kamioka Mine (Gifu prefecture, Japan) now are adapted to our exploration, mining and mineral processing works at Huanzala Mine and Pallca Mine in Peru, South America. The ores exploited from these mines are processed on site by mineral processing plant to mainly produce Zinc concentrate, which will be delivered to our smelting plant in Japan to be treated to produce Zinc bullion.

Okuaizu Geothermal Co., Ltd., our wholly-owned subsidiary provides Geothermal steam for Yanaizu-Nishiyama Geothermal Electric Power Plant operated by Tohoku Electric Power Co., Inc.,

Mineral Resources Development Engineering Services. Environmental Protection Related Engineering Services.