Core facilities / group companies

Domestic Core Facilities

Head Office

Head Office

Address
11-3, Shimbashi 5-chome Minato-ku, Tokyo 105-8716, Japan (Shimbashi Sumitomo Building)
Phone · Facsimile

General Affairs Dept.
Phone: 81-3-3436-7701 
Facsimile: 81-3-3434-2215

Public Relations & Investor Relations Dept.
Phone: 81-3-3436-7705 
Facsimile: 81-3-3434-2215

Detailed map
Google Map
Transportation
  • JR Line: About a 7-minute walk from Shimbashi Station via Shimbashi Nishiguchi Dori

Osaka Branch

Address
5-33, Kitahama 4-chome, Chuo-ku, Osaka 541-0041, Japan (Sumitomo Building)
Phone · Facsimile

General Affairs Dept.
Phone: 81-6-6223-7714 
Facsimile: 81-6-6223-7755

Sales Dept.
Phone: 81-6-6223-7700 
Facsimile: 81-6-6223-7756

Detailed map
Google Map
Transportation
  • About a 100-meter walk from the 4th exit of the Yodoyabasghi Station North EXIT (subway)

Nagoya Branch

Address
1-10-20, Nishiki, Naka-ku, Nagoya, Aichi 460-0003, Japan (Urbannet Fushimi Building 7F)
Phone · Facsimile

Phone: 81-52-209-6587 
Facsimile: 81-52-209-6589

Detailed map
Google Map
Transportation
  • 10-minute drive by taxi from JR Nagoya Station
  • 1-minute walk from No. 10 Exit of Fushimi Station of the Higashiyama Line and the Tsurumai Line, Nagoya City Subway

Besshi-Niihama District Div.

Address
Besshi-Niihama District Div. Main Building (General Affairs Center, Safe
Phone · Facsimile

Phone: 81-897-37-4800 
Facsimile: 81-897-37-4804

Detailed map
Google Map
Transportation
  • About a 10-minute drive from JR Niihama Station

Mineral Resources Business

Hishikari Mine

Photo: Hishikari Mine

The Hishikari Mine, located in northern Kagoshima Prefecture, boasts a high grade of over 20 grams of gold per tonne of ore (the average grade of major gold mines in the world is about 5 grams) and has been producing gold steadily since 1985.
While there were many metal mines in Japan in the past, today the Hishikari Mine is the only metal mine in Japan that operates on a commercial scale.

Facility
Address
3844, Hishikari-Maeme, Isa, Kagoshima 895-2701, Japan
Phone · Facsimile

Phone: 81-995-26-3111 
Facsimile: 81-995-26-4130

Detailed map
Google Map
Transportation
  • About a 40-minute drive from Kagoshima Airport
  • About a 10-minute drive from Hishikaricho Town Hall
  • About a 10-minute drive from Yunoo
  • About a 1-hour bus ride to Hishikaricho Town Hall from Kagoshima Airport
  • About a 1.5-hour bus ride to Hishikaricho Town Hall from Minamata (via Ohkuchi)

Smelting & Refining Business

Toyo Smelter & Refinery

Photo: Toyo Smelter & Refinery

The Toyo Smelter & Refinery, located between the cities of Saijo and Niihama in Ehime Prefecture, began operations in 1971 under the philosophy of "an environmentally friendly and clean smelter." The site of the Besshi Copper Mine, which has been operated by the Sumitomo Group since the Edo period, is located nearby, and the Toyo Smelter & Refinery continues to smelt copper, carrying on the history of the mine.
We have one of the world's largest single flash furnaces and boast world-class production capacity in terms of advanced smelting, production management, and environmental conservation technologies.

Facility
Address
145-1, Funaya-Aza-Shinchi-Otu, Saijyo, Ehime 793-0005, Japan
Phone · Facsimile

Phone: 81-897-56-1222 
Facsimile: 81-897-56-2020

Detailed map
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Niihama Nickel Refinery

Photo: Niihama Nickel Refinery

The Niihama Nickel Refinery is the only plant in Japan that produces electrolytic nickel and electrolytic cobalt. Electrolytic nickel production began in 1939 and has since undergone two major production process changes. Production now operates using an extremely efficient method known as MCLE (Matte Chlorine Leach Electrowinning).

Facility
Address
5-1, Nishibara-cho 3-chome, Niihama, Ehime 792-8555, Japan
Phone · Facsimile

Phone: 81-897-37-4830 
Facsimile: 81-897-37-4839

Detailed map
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Harima Refinery

Photo:Harima Refinery

The Harima Refinery is a main smelter for the Sumitomo Metal Mining and has produced zinc, lead, indium and other metals since it began operations in 1966. Currently, the plant is operating to produce nickel sulfate, which is used as a raw material for rechargeable batteries for hybrid and electric vehicles.

Facility
Address
346-4, Miyanishi, Harima-cho, Kako-gun, Hyogo 675-0145, Japan
Phone · Facsimile

Phone: 81-79-437-8651 
Facsimile: 81-79-437-0223

Detailed map
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Materials Business

Ome District Div.

Photo: Ome District Div.

The Ome District Div., located in Ome City, Tokyo, was established in 1967 as the Ome Plant of the Electronics Metal Division and began manufacturing lead frames for semiconductors. Since then, we have expanded our business to include a wide range of electronic industry materials, and the division is now a major production base and supplier of advanced materials used in PCs and cell-phones.

Facility
Address
1-6-1 Suehiro-cho Ome, Tokyo 198-8601 Japan
Phone · Facsimile

Phone: 81-428-31-1181 
Facsimile: 81-428-31-9170

Detailed map
Google Map
Transportation
  • 5 minutes by taxi from JR Ozaku Station.

Isoura Plant

Photo: Isoura Plant

The Isoura Plant was established in 1987 to produce high-purity metal compounds and rare metals. Focusing on battery materials, it supplies high-performance materials to markets where future growth is expected, including the automotive and precision equipment sectors where technological innovation is continuing.

Facility
Address
17-3, Isoura-cho, Niihama, Ehime, 792-0002, Japan
Phone · Facsimile

Phone: 81-897-34-9743 
Facsimile: 81-897-33-3986

Detailed map
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Research & Development

Ichikawa Research Center

Photo: Ichikawa Research Center

In order to fulfill the role of planting the seeds for Sumitomo Metal Mining’s development of materials, which mainly focuses on fundamental research into powder-related areas, the way the Ichikawa Research Center works was revised on October 1, 2015. The center boasts an analytical laboratory, and by using a range of advanced analysis equipment to implement multifaceted evaluation and analysis, it achieves very efficient development of new materials and is able to respond swiftly to customers.

Address
18-5, Nakakokubun 3-chome, Ichikawa, Chiba 272-8588, Japan
Phone · Facsimile

Phone: 81-47-372-7221 
Facsimile: 81-47-372-9133

Detailed map
Google Map
Transportation

From the North Exit of Ichikawa Station of the JR Sobu Line

1. By Bus : (about a 20-minute ride on both lines (3) and (4))

  • Bus line (3)
    「Ride one of the four buses titled: "To Matsudo via Kokubun (Matsudo 51)", "To Kitakokubun-eki (North Kokubun Station)", "To Seitokugakuen", or "To Kokubunsoushajou (Kokubun bus yard)", get off of the bus at the "Kokubun-soshajou" bus stop, and walk for five minutes.
    Note) You should never ride the buses titled "To Kokubun koukou (Kokubun High School)" or "To Ichikawa kitakoukou (Ichikawa North High School)".
  • Bus line (4)
    Ride the bus titled "To Kokubunsoushajou via Kounodai" (minibus), get off of the bus at the "Nakakokubunsakaue" bus stop, and walk for one minute.

2. By Taxi

  • 15-minute ride from the taxi terminal

Niihama Research Laboratories

Photo: Niihama Research Laboratories

By further developing the smelting and refining technology that forms the foundation of Sumitomo Metal Mining’s technology, the Battery Research Laboratories work to unleash the latent potential of non-ferrous metals. In specific terms, they work on the development of new processes based on smelting and refining technology and of powders and other metallic materials.

Address
17-5, Isoura-cho, Niihama, Ehime 792-0002, Japan
Phone · Facsimile

Phone: 81-897-37-7171 
Facsimile: 81-897-37-7173

Detailed map
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Mineral Resource & Hydrometallurgy Process Center

Photo: Mineral Resource & Hydrometallurgy Process Center

The Mineral Resource & Hydrometallurgy Process Center was constructed in the 2014 with the aim of further strengthening Sumitomo Metal Mining’s competitiveness in terms of technology and equipment in the fields of resources and refining. This center has permanent facilities for research into resource and refining, and has the organization and functionality that enable it to flexibly combine facilities according to the theme of research.

Address
5-1, Nishibara-cho 3-chome, Niihama, Ehime 792-8555, Japan
Phone · Facsimile

Phone: 81-897-37-4877 
Facsimile: 81-897-37-4878

Detailed map
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Battery Research Laboratories

Photo: Battery Research Laboratories

In the materials business, which is classed as a core business alongside mineral resources and smelting and refining, the Battery Research Laboratories were newly established on October 1, 2010 in order to accelerate the expansion of the secondary battery cathode material business for which significant growth can be expected going forward. As well as working to increase market share with existing customers through improvements and enhancements to main products, the labs also work on research and development into foundation technologies for battery materials which include the commercialization of new nickel and ternary lithium ion battery cathode materials, fundamental research on the basis of SMM’s long-term vision concerning next-generation battery materials, and the establishment of battery evaluation technologies.

Address
17-3, Isoura-cho, Niihama, Ehime 792-0002, Japan
Phone · Facsimile

Phone: 81-897-37-7181 
Facsimile: 81-897-37-3450

Detailed map
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Materials Laboratories

Photo: Materials Laboratories

The "materials business" is one of our core businesses, alongside the mineral resources business and the smelting and refining business. This business field utilizes the company’s fundamental technologies – powder synthesis, surface treatment technologies, and crystal growth and processing technologies – to engage in the research and development of new non-ferrous metal materials with added functionality.
Collaborating within the base with the Computer Aided Engineering and Development Department and the Analysis Technology Department, they promote efficient material searching and the elucidation of the mechanisms behind functional expressions. They are also working to make progress with the research and development of new materials that will lead to the creation of new business.

Facility
Address
1-6-1 Suehiro-cho Ome, Tokyo 198-8601 Japan
Phone · Facsimile

Phone: 81-428-31-4140 
Facsimile: 81-428-32-3428

Detailed map
Google Map
Transportation
  • 5 minutes by taxi from JR Ozaku Station.