N I T T E T S U MINING
Yusen Building 6th ﬂoor
3 - 2,Marunouchi 2 - chome Chiyoda-ku,Tokyo 100 - 8377, JapanT E L : ＋8 1 - 3 - 3 2 8 4 - 0 5 1 6 F A X : ＋8 1 - 3 - 3 2 1 5 - 8 4 8 0
www.nittetsukou.co.jp

N I T T E T S U MINING

2021.4

Yama (Mine)

With a familiar feeling, the employees of Nittetsu Mining
Co., Ltd. call the business establishments “yama” (mine).
This unique name of “yama” originated years ago when
there were many coal and metal mines operating in Japan. The
mines were opened deep in the mountains in many cases;
accordingly mine communities consisting of production
facilities, offices, and company houses for workers were built
around the mines. The communities were called “yama” ingeneral. In the past, from these special geographical conditions
and the type of industry, a unique lifestyle in a close-knit
community, like a “family by every yama,” was formed.
Consequently, people living there felt they were a community
sharing the same fortunes.
Eventually, transportation became more effective andmoving to other districts became easier, resulting in a changeof consciousness. However, the idea of a “yama” is in theminds of Nittetsu Mining employees – even today.

1Reiichi Morikawa
Representative Director and President

Nittetsu Mining Co., Ltd. (“our company”) was establishedafter separating from the mining division of the former Japan
Iron & Steel Co., Ltd. (Today's Nippon Steel Corporation) in
1939. The intention was to develop and steadily supply raw
materials, such as coal, iron ore, and limestone, for steel
making.
Since then, our company has prospered and expanded
while bearing a heavy burden of responsibility for supplying
raw materials to basic industries in Japan through thedevelopment of underground resources. In the midst of arevolution of resources and energy situations in the course of
economic growth, our main operations have changed fromcoal to metal, further changing to nonferrous metals such as
limestone and the like. Today, our company has established aunique position in the industry as a comprehensive resources
corporation engaged in mine development at home andabroad.
From now on, responding to social demands, we aremaking every effort to steadily supply these resources. At thesame time that we are using the traditions and technologies
accumulated over a long time, we will tackle the developmentof other technologies around mines, such as security and thedevelopment of new resources both at home and abroad,adding value to mineral resources, and consulting on mining
and geology, among other activities. We will take furtheraction to strengthen our business base as a comprehensive
resources corporation in order to achieve further growth.
Furthermore, we will contribute to our shareholders,customers and community by demonstrating all of thestrengths of our group through the development of suchbusinesses as machinery and other products centered on
environment-related products, real estate, renewable energy
business, etc.

2Resources Division
Torigatayama working face

Limestone is the main product of the Resources Division ofour company. Limestone is sedimentary rock that is formed bydeposits of the bones and shells of sea creatures, such as coral,that has accumulated on the bottom of the sea for hundreds ofmillions of years, then upheaved to the surface by crustal
movements.
Though our country is said to have few natural resources,limestone is an underground resource enabling us to boast aself-sufficiency of 100% and domestic annual production is140 million tonnes.
Our company has limestone mines in various places inJapan, such as the Torigatayama Quarry Complex in Kochi
Prefecture—the largest mine in the country—the Shiriya
Quarry Complex in Aomori Prefecture, and the Oita Quarry
Complex in Oita Prefecture, among others. Our annual
production, placing us among the top class in the domestic
business world, is about 25 million tonnes. We supply
domestic steel and cement manufacturers, and a portion isexported abroad to such countries as Australia and Taiwan.

Torigatayama coastal facilities

Limestone production process of
Torigatayama Quarry Complex
Working face
Surface mining
working face
(Bench cut)
Shaft
Primary and secondarycrushing room
Underground stock pile
vessel3

Shaft
dumping

Undergroundcrushing yard

Long-distancebelt conveyer

ceResources Division
The main component of limestone is calcium carbonate, andfrom its characteristic, it is used as the main and sub-materials
that are indispensable for raw material industry representing
the country, such as steel and cement.
The applications are varied, including aggregates for civilengineering/construction, desulfurizing agents used at power
plants and waste treatment facilities, asphalt fillers, fertilizer,feed, glass, paper making, sugar making, drugs and food;Limestone is a mineral resource closely connected with dailyliving.
Furthermore, our company has opened quarries in many
places in Japan and has supplied many types of aggregate tousers throughout Japan.
Our company is responding to a variety of extensive needs
as well as opening up new avenues of use with thoroughquality control and full use of technologies accumulated over along time.

Main application of limestone

for steel & iron-making (Blast Furnace)

for cement (cement kiln)

esfor aggregate (ready-mixed concrete plant)

SizingStock pile

Shipping
for flue gas desulfurization (thermal power station)

Products sizing place
Stock pile vessel

Loading facilities

Products stock pile yard
for road paving(asphalt pavement works)

4

Resources Division

The Kosho Maru

The Resources Division of our company is also tackling
product development that uses mineral resources by exhibiting
the technical capability cultivated over a long time as aresources company.
The main products include inorganic paper (flameproof
paper and calcium carbonate paper) used as materials forinorganic powders such as aluminum hydroxide and calcium
carbonate. This inorganic paper is widely used in flameproof
building materials and thermal insulation boards. We also sellwhite limestone, quicklime, high-purity silica, and “Asheet”
paper shoe insoles. As well, we are developing businesses forvarious other types of powder.
As a special agency of ENEOS Corporation, we sell A/Cheavy oil for ship fuel and lubricants that take advantage of ourlong business relationships. We also sell petroleum products
and imported coal and coke and LPG as well as fuel oil forvarious industries.
From now on, our company, as a comprehensive resources
company, will be concerned with every resource that supports
industries in Japan.

5The Nissho Maru

White limestone (left: quicklime, right: white limestone)

Resources Division

Tree planting at sedimentary space

Considering that coexistence and co-prosperity
with the natural environment and the community are
indispensable for continuing our business in themining industry, our company is proactively tacklingenvironmental preservation on a global scale bypreventing environmental mine pollution and by
reducing the environmental load, while cooperatingwith the community.
Starting in fiscal 1998, we began to acquire ISO
Watering for control of dust
Company-owned Shiraoi Forest
14001 certifications for international environmentalmanagement, as a part of our global environmental conservation activities. We have now acquired this certification for all our mines and
we are working daily to promote environment-friendly activities.
In December 2013, we acquired a Forest Management Certificate from the Sustainable Green Ecosystem Council (SGEC) for theShiraoi Forest (Shiraoi-cho, Shiraoi-gun, Hokkaido) owned by our company. In this way, we are pursuing effective
maintenance/management of company-owned forests aiming at the preservation of the global environment and coexistence with thecommunity.
Every business unit has set up energy-saving targets to reduce the environmental load and to promote countermeasures against global
warming aiming to be an environment-friendly enterprise. As well, we are implementing environmental management activities, thus
promoting fuel and electricity saving. Each business unit strives to reduce waste through careful use of materials, water, electricity and fuelfor changing to a more recycling-based society.
Further, as a mining company which has been working with the underground materials for a long time, our company has started
geo-scientific research for technical developments by using our knowledge and experiences. This research covers geology, geophysics,
rock mechanics, hydraulics and hydrology. For our corporate activities from now on, it will be necessary to take care for not only theregional environment but also the global environment. Every business establishment will promote activities considering environmental
issues such as energy saving, resource saving and the like.

6Metal Division

Hibi Kyodo Smelting Co., Ltd. Tamano Refinery

The Metal Division of our company originated in thedevelopment and operation of the Kamaishi Mine andmany other metal mines. Domestic metal mines
discontinued operation one after another because ofadverse change of business environment caused by theexhaustion of ore reserves, a rise in the exchange rate of
the Yen and so forth. To cope with these circumstances,
our company, using our own exploration anddevelopment technologies for metal mines, hasdeveloped overseas copper mines in a search to secureresources. The development of overseas copper mines
carried out by our company has progressed steadily andhas demonstrated success.
Our overseas copper mine development businessstarted in 1975 by developing the Qaleh-Zari Mine in
the Islamic Republic of Iran, followed by thedevelopment of the El Roble Mine in the Republic ofColombia of South America, then, at present, thedevelopment and operation of the Atacama Mine in theRepublic of Chile of South America.
Furthermore, in 1968, our company participated inthe Hibi Kyodo Smelting Co., Ltd. and entered into thecopper smelting and refining industry. The copper
refined by that joint-venture for this company is about
50,000 tons per year for our portion which is mainly
supplied to domestic electric wire&cable mills,copper
fabricator such as rod and plate, and partially exported
to overseas markets.
7Electrolytic copper

Copper concentrate

Atacama Mine

Resources Development Division

Landscape of test boring survey in Chile (sampling of underground rocks)

The Resources Development Division of our company has
consistently dealt with exploration and development of natural
resources in Japan, a country known to be poor in natural resources.
Its activities cover not only domestic mineral resources but also
overseas mineral resources such as materials for steel manufacturing,copper ore and so forth in South East Asia, South America, andMiddle East.
In the northern part of the Republic of Chile in South America, weare vigorously exploring mantle-type copper deposits around theAtacama Mine. We are analyzing satellite images to find promisingmining sites where minerals can be efficiently extracted. This includes
the application for and acquisition of mining concessions, andsubsequent exploration work is being conducted. In Southeast Asia,
we are acquiring mining sites in various countries. In Fiji in the South
Pacific, we confirmed a promising porphyry copper mineralizationand have started a precise exploration including an economic
evaluation through joint exploration with three companies including
overseas enterprises, thus promoting exploration activities throughout
the world.
In the future, to establish a stable supply system of resources in the21st century, we aim to have global exploration/development
activities that pay close attention to nonmetal resources including
limestone throughout Asia and copper resources in the Asia-Pacificregion including South America, Australia and Southeast Asia.
Even though exploration and development of a new mineraldeposit will not be achieved in a day, our company will take every
effort to secure the stable supply of natural resources.

Observation of rocks sampled from test boring survey (Philippines)

Landscape of geological survey (collection ofrocks sampled from a surface outcrop)(Philippines)

8Environment Division

Effect of coagulant "Polytetsu ®"The Environmental Division of our company supplies
wastewater treatment chemicals, with special emphasis onPolytetsu®, an internally developed inorganic poly-ferricflocculant.
Polytetsu® is mainly used for city sewage and industry
effluent treatment. By comparison with the existing aluminum
coagulants, it is used for not only water treatment agent –superior for coagulating sedimentation and sludge dehydration– but also as a deodorant effective against offensive odor
substance such as hydrogen sulfide. Furthermore, application
as a soil reclamation to remove heavy metal has recentlyincreased. Additional sales products include a metallic
deodorant Dashace®, an organic high molecular coagulant
Tetsuflock®-a superior dehydrating agent and others.
Our marketing policies are to provide chemicals to any
customers all over Japan safely and steady, to provide careful
technical service how to operate water treatment systems by
our sales engineering stuff, and also to provide new chemicals
and new applications by cooperating with the Research andDevelopment Division according to the environmental needs ofcustomers and society such as hazardous soil, sewage pipeline
decay, fly ash containing heavy metal, etc.

9Packaged Polytetsu ®

Packaged Polytetsu ®

Machinery Division

Sinter Plate filter ®

Sinter Plate filter ® (element)

Our Machinery Division is developing operations to copewith a wide range of needs from earth-friendly environmental
products to industrial machines.
For environmental products, we manufacture and sell a dust
collector incorporating the Sinter-Lamellar-Filter®, a sinteredplastic resin element with high collection efficiency, and the“Plasma Dash®” cigarette smoke eliminator for smokingrooms. In addition, for the industrial machinery market, we are
manufacturing/selling Elbow Jet, an ultra-fine particle classifiercapable of sorting to the submicron level as well as automatic
inspection machines used in the food/pharmaceutical field.
The machinery division is also aiming to provide products
and services for customer satisfaction from now on.

“Plasma Dash ® Sigma” cigarette smoke eliminator for smoking“Geo-sinter ®” dust collector for tunnels

Automatic culture media equipment

10Real Estate Division

Honami Park-citySince 1978, when the first office buildingNittetsuko Morioka Building was completed, theReal Estate Division of our company has carried out
business activities to effectively use company-owned
real estate.
According to the needs of the market, this division
is also managing company-owned office andapartment buildings etc., in urban areas, and isleasing restaurants, stores, factories, warehouses,
parking lots and other properties at disused mines
and idle land over the whole country.
The main properties are Honami Park-city
centering on a shopping center (Iizuka, Fukuoka: theformer Futase Mining Works), Mitaka Nisshin
Intelligent Building (Mitaka, Tokyo: the old
Research and Development Center), City Shopping
Avenue Yamine, road-side stores complex (Sasebo,Nagasaki: the former Hokusho Mining Works), andthe Stores & Apartment Complex in Setagaya-ku,
Tokyo and hotel-condominium-store complex
building (Shinjuku-ku, Tokyo).
From now on, forming a clear view of market
trends, we will take effort to develop the real estatebusiness by efficiently using company-owned estates
to contribute to the revitalization of regional
economies.

11Rokakoen stores and apartment complex
Nishi-Shinjuku 5-chome BuildingMitaka Nisshin BuildingRenewable Energy Division

Drilling for geothermal production well

Our Renewable Energy Division is developing earth- orenvironment-friendly natural energies including geothermal,hydro, and solar.
The Geothermal Division began geothermal surveys in
Kirisima-shi, Kagoshima Prefecture in 1973. From March
1996, this division began supplying steam to the 30,000-kW
Ogiri Geothermal Power Station of Kyushu Electric Power
Company Inc. More than two decades have passed since then,and the division still maintains a steady supply of steam to thepower station. We will also continue with geothermal
development in the nearby Shiramizugoe district and otherareas, always mindful of the environment.
For hydroelectric power generation, we are generating
electric power using space in the gallery or old mining siteand spring water in the mine cavity in the Kamaishi Mine
(Kamaishi Kozan Co., Ltd.: a subsidiary) in Iwate Prefecture
where iron ore and copper had been mined for over 150 years.
We also produce solar energy by making use ofcompany-owned land such as inactive mines throughout
Japan to generate electricity at eight mega solar powerstations (total rated power output of 13,000kW).

Ogiri Power Station

Toyako Mega-Solar Power Plant

Yunoki Mega-Solar Power Plant

12

Research & Development Center

Research & Development Center

The Research & Development Division is investigating and developing, as well as engineering, new products
and materials which will become principal pillars of new
businesses that strengthen the corporate base, by freely
using our rich technical background and experiences
cultivated over a long period.
Our mineral resource divisions support new mining
development projects and develop new technologies todeal with refractory ores through researching beneficiation technologies such as flotation and electromagnetic
separation, which are processes to separate and collectvaluable minerals during mine operation. Furthermore,
we also perform analysis tasks such as measurement of
the physical properties of various minerals and component measurement of environmental samples.
Our material resource divisions develop and commercialize new materials and technologies (balloon structured silica “SiliNax®” and nano-film coating technology “Nanostrata®”)through the application of particle synthesis technology and inorganic oxide coating on
powder technology. These technologies are developed for the purposes of adding value tomineral resources such as our flagship mineral product, limestone, which benefits from ourinnovations in particle synthesis technology.
Our environmental divisions devote themselves to the research and development of new
methods of manufacturing and improved function for water processing agent such as“Polytetsu®,” an inorganic poly-ferric flocculant. Our machinery divisions make improvements to products such as the “Sinter-Lamellar-Filter®” dust collector and “Plasma Dash®”cigarette smoke eliminator for the purposes of expanding their areas of application as well as
development of new products.
13Scanning electron microscope“Polytetsu®” inorganic
poly-ferric flocculantAffiliated Companies Related to Resources Business
Our subsidiary companies dealing with resource
development produce and sell limestone as well as quartzite,
which is necessary for the production of steel.

Funao Mining Co., Ltd.

Furthermore, Nittetsukoukenzai Co., Ltd. having a special
ship, plays a role in limestone transportation.

Limestone carrier “Ryusho-maru”

Kamaishi Kozan Co., Ltd. in Iwate Prefecture is sellinga natural mineral water called Sennin-Hisui (legendarymiraculous water) from mineral water springs 600munderground.

Hachinohe Mining Co., Ltd.
Sennin-Hisui

Subsidiary companies dealing with industrial machinery
Our subsidiary companies dealing with industrialmachinery provide individual and unique products for a wide
range of markets. Kobukuro Techno Co., Ltd. designs,
manufactures and installs crushing and grinding plants andrecycling plants for waste concrete and soil.

Drumrod Screen

Kaho Manufacturing Co., Ltd. produces monorails andslope car for resort facilities, parks and dam sites. Nippon
Ball Valve Co., Ltd. produces high-performance valves andassociated mechanical products for various industrial plants.

Slope car14

N I T T E T S U MINING
Yusen Building 6th ﬂoor
3 - 2,Marunouchi 2 - chome Chiyoda-ku,Tokyo 100 - 8377, JapanT E L : ＋8 1 - 3 - 3 2 8 4 - 0 5 1 6 F A X : ＋8 1 - 3 - 3 2 1 5 - 8 4 8 0
www.nittetsukou.co.jp

N I T T E T S U MINING

2021.4