Our company has limestone mines across Japan, such as the Torigatayama Quarry Complex in Kochi Prefecture, the largest mine in the country with the highest annual production, placing us among the top class domestically.

The Metallic Minerals Division develops and operates the Atacama Copper Mine of the Republic of Chile in South America and smelts electrolytic copper on consignment from Hibi kyodo Smelting Co., Ltd.

Our company’s Resource Development Division has consistently explored for and developed natural underground resources. Our activities cover mineral resources, such as materials for steel manufacturing, copper ore, and other materials around the world.

The Environment Division of our company supplies wastewater treatment chemicals, with a special emphasis on Polytetsu.

The Machinery Division focuses on producing eco-friendly environmental machines and a range of industrial machines that meet the extensive needs of customers.

The Real Estate Division of our company has carried out business activities to effectively use company-owned real estate. Mindful to the needs of the market, this division also manages company-owned office and apartment buildings in urban areas and is leasing restaurants, stores, factories, warehouses, parking lots, and other properties, some at disused mines and idle land, across the country.

The Geothermal Division is engaged in geothermal surveys and development, while being mindful of the environment.

The Solar Power Division is constructing solar power plants on eight unused company-owned sites as part of our development of natural energy, and selling the power to power companies.

The Research & Development Division, by freely using our rich technical background and experiences cultivated over a long period, is investigating and developing, as well as engineering, the new products and materials that will become the principal pillars of new businesses that will strengthen the corporate base.