Significant Environmental Accidents / Biodiversity
Emissions into the Atmosphere
SOx emissions during FY2020 increased by about 26% year on year. At THPAL, emissions rose by about 90% due to factors such as fuel properties and adjustments to operating conditions. NOx emissions increased by about 14% year on year. Soot and dust emissions decreased by about 15% year on year. At CBNC, emissions fell by about 58% due to factors such as the effects of fuel properties.
Each emissions figure was calculated based on the measurement of flue gas.
Emissions into Water
The COD*1 pollutant load in FY2020 decreased by about 11% year on year. The BOD*2 pollutant load increased about 15% year on year. Many SMM Group business sites face onto Japan’s Seto Inland Sea and are subject to controls on the total amounts of COD, nitrogen and phos-phorous emissions under the Act on Special Measures Concerning Conservation of the Environment of the Seto Inland Sea.
The volume of freshwater usage decreased by about 5% year on year to about 35 million m3. In this calculation, diversion water,*3 which is unrelated to production, is excluded from withdrawal and release at mines. The volume of seawater usage increased by about 15% year on year. This was attributable to an increase in production volumes at the Toyo Smelter & Refinery.
- *1COD (Chemical Oxygen Demand): Measured for emissions into seas, including emissions into rivers flowing into enclosed seas.
- *2BOD (Biochemical Oxygen Demand): Measured for emissions into rivers, excluding emissions flowing into enclosed seas.
- *3Diversion water: Water that flows into the site as an input and flows out of the site as an output without being used for production purposes. Included starting with data for FY2017.
Material Flows within Business Activity (FY2020)
INPUTS (Resources & Energy)
|Gold and silver ore||191 kt|
|Copper concentrates||1,441 kt|
|Nickel oxide ore||8,581 kt|
|Nickel matte, etc.||39 kt|
|Raw material for batteries||75 kt|
|ALC raw material, incl. silica rock||159 kt|
|Hydrotreating catalyst raw material||39 kt|
|Copper scrap||135 kt|
|Secondary zinc||19 kt|
|Secondary precious metals||4 kt|
|Electric arc furnace dust||71 kt|
|ALC waste||73 t|
Percentage of recycled input raw materials used 2.13%
Does not include materials recycled within plants.
|Silica sand(for copper smelting)||122 kt|
|Chemicals (lime-based)||1,202 kt|
|Chemicals (sodium-based)||106 kt|
|Chemicals (magnesium-based)||14 kt|
|Sulfuric acid||460 kt|
|Cement, etc.||103 kt|
|Heavy oil||44,991 kL||1,843 TJ|
|Coal/coke||535,636 t||13,817 TJ|
|Diesel/gasoline/kerosene||18,145 kL||680 TJ|
|LPG・LNG||8,812 t||448 TJ|
|City gas||8,775 ML||395 TJ|
|Purchased electricity||1,486,802 MWh||14,465 TJ|
|Purchased steam||65,802 GJ||67 TJ|
|Solar power generation, binary power generation||306 MWh||0.03 TJ|
|Wood pellets||621 t||12 TJ|
|Total energy consumption||－||31,728 TJ|
Calorific values for both Japan and overseas are calculated using coefficients conforming to the Japanese Act on the Rational Use, etc. of Energy for fuel, heat, electricity, etc. that were consumed in busi-ness activities both in Japan and overseas. Fuels used as reducing agents are also included. Energy value indicates the energy input in the case of purchased electricity and purchased steam, and calorific value for all others.
|Total volume of fresh water withdrawn||35,173 ML|
|Breakdown of Total volume of fresh water withdrawn||Surface water (rivers)||13,717 ML|
|Rain water||68 ML|
|Ground water||6,657 ML|
|Industrial water (water from another organization)||14,339 ML|
|Tap water (water from another organization)||393 ML|
|Volume of seawater withdrawn||165,132 ML|
|Total volume of water consumed from all areas*2||4,281 ML|
- *1SMM uses the WWF/DEG Water Risk Filter to determine regions with high water stress. As a result of this, there are no areas of high water stress at SMM Group’s production sites.
- *2The total water consumption is estimated by subtracting the total amount of water discharged from the total amount of water withdrawn.
OUTPUTS (Products & Emissions)
|Electrolytic copper||443 kt|
|Electrolytic nickel||56 kt|
|Nickel sulfate||11 kt|
|Electrolytic cobalt||4 kt|
|Crude zinc oxide||33 kt|
|Battery materials||49 kt|
|Sulfuric acid||341 kt|
|Hydrotreating catalysts||7 kt|
Percentage of products from recycled input 4.87%
Emissions into the Atmosphere
|Breakdown of CO2||Scope 1
(Decrease of 65 kt compared to the previous fiscal year)
(Increase of 17 kt compared to the previous fiscal year)
(emissions during domestic transport)*3
(The same year on year)
|Soot and dust||80 t|
|PRTR substances||9 t|
- *1Direct emissions for both Japan and overseas are calculated using emission factors conforming to the Japanese Act on Promotion of Global Warming Countermeasures. This includes non-energy-derived GHG emissions (385 kt-CO2e) that are outside the scope of the law. GHGs from wood pellets are not included.
- *2The amount of GHG emissions from electric power purchased in Japan is calculated according to the market-based method using the emission factors of electric suppliers. For overseas emission factors, we used the latest emission factors for each country as published by the IEA. The amount of indirect emissions was 744 kt-CO2e when calculated for both Japan and overseas with the location-based method using IEA country-specific emission factors.
- *3Emissions during transportation in Japan are calculated in line with the Act on the Rational Use, etc. of Energy and the Act on Promotion of Global Warming Countermeasures.
Waste (including Items of Value)
|Total waste||6,857 kt|
|Breakdown of total waste||Spoil||3 kt|
|Wastewater sludge from CBNC, THPAL, etc.||6,777 kt|
|Industrial waste (Japan)||76 kt|
|Landfill on company premises||6,780 kt|
|PRTR substances*||1,822 t|
- Discharges into rivers flowing into enclosed seas are included as “discharges into seas.”
Emissions into Water
|Total wastewater||199,057 ML|
|Breakdown of total waste||Discharges into seas*||198,051 ML|
|Discharges into rivers||965 ML|
|Sewerage, etc.||42 ML|
|COD(chemical oxygen demand)||49 t|
|BOD(biochemical oxygen demand)||15 t|
|Total phosphorus||1 t|
|Total nitrogen||69 t|
|PRTR substances (discharged into public water areas)||74 t|
|PRTR substances (discharged into the soil or in landfills within business premises)||3 t|
- Total transfers to sewerage and off-site transfers.
Business Activities in Areas of High Biodiversity Value*1 (FY2020)
|Area||Size of production site(hectares)||Details|
|Seto Inland Sea||62
(Minoshima & Ienoshima islands)
|Shisaka Smelting Co., Ltd. operates on Minoshima and Ienoshima islands, neighboring Setonaikai National Park (IUCN Category 2 and neighboring equivalent areas)|
|The Philippines||434||Coral Bay Nickel Corporation operates on Palawan Island (in hunting-prohibited and bird protection areas (IUCN Category 4 and neighboring equivalent areas))|
Currently, there are no projects in any region requiring the preparation of a management plan.
- *1Protected areas classified as Category 4 and above by the International Union for Conservation of Nature (IUCN) and neighboring areas, as well as equivalent areas of high bio-diversity value (SMM research). Areas classified as Category 1 are of highest priority.
Amount of Land Developed or Rehabilitated (FY2020)
|A: Total area of land not rehabili-tated (as of the end of FY2019)||B: Area of land newly developed in FY2020||C: Area of land newly rehabilitated in FY2020||D: Total area of land developed but not rehabilitated
|Coral Bay Nickel Corporation||274||6||0||280|
|Taganito HPAL Nickel Corporation||567*1||0||-2*2||568|
- *1The area of the developed land was reviewed on the basis of the survey results.
- *2THPAL conducted rehabilitation of 12 hectares in the developed land in fiscal 2020. However, as the survey shows a decrease in existing rehabilitated area due to with-ering and other factors, the area of newly rehabilitated land is adjusted. THPAL is also advancing rehabilitation activities in nearby regions outside the site. In coopera-tion with the Philippine government, rehabilitation of 74 hectares was achieved in FY2020 in nearby regions outside the site. To date, 455 hectares in total have been certified as rehabilitated area.
Significant Environmental Accidents / Biodiversity
Release Control for Chemical Substances
Release and Transfer of PRTR Substances
Breakdown of Releases, by Destination
Breakdown of Transfers
Breakdown of Releases into the Atmosphere
Breakdown of Releases into Water
An overview of releases and transfers of chemical substances based on Japan’s Pollutant Release and Transfer Register (PRTR) system in FY2020 is as follows.
The number of data-submitting sites in the SMM Group was 23 (26 in FY2019). The Group had 40 substances requiring registration (42 in FY2019).
The total released and transferred amount (releases + transfers) came to 1,907 t, a decrease of about 14% year on year, mainly due to a decrease in manganese transferred outside of business sites resulting from a decrease in the volume of iron clinker¹ to undergo final disposal as industrial waste after being generated as a by-product at Shisaka Smelting Co., Ltd.
The amount discharged into the atmosphere decreased by about 44%. The main factor behind this was a decrease in releases of dichloromethane at the Ome District Division. In addition, there were no discharges of ozone-depleting substances. Dis-charges into water decreased by about 6% year on year.
- Iron clinker: The residue remaining during the processing of electric arc furnace dust after recovering zinc. The residue able to be sold is called “iron pellets,” and the residue to be disposed of is called “iron clinker.”
Final Disposal Amount of Industrial and Mining Waste in Japan
The SMM Group has long been making efforts to reduce industrial waste in Japan and the amount of wastewater sludge (mining waste) that undergoes final disposal from the mine-affiliated Toyo Smelter & Refinery. The total final disposal amount in FY2020 was 51 kt, which was a decrease of about 20 kt from FY2019. The main factor behind this decrease was a decrease in the final disposal volume of iron clinker at Shisaka Smelting Co., Ltd.
Final Disposal Amount1of Industrial and Mining Waste in Japan
- *1Includes waste destined for landfills and incineration without heat recovery.
- *2Mining waste in the form of wastewater sludge generated by mine-affiliated Toyo Smelter & Refinery that is landfilled within the business site.
Waste by Type and Treatment Method (FY2020)
Waste by Treatment Method(Hazardous*3/Non-hazardous*4)
|Landfill on company premises/Contracted disposal||Landfill on company premises||6,780|
- *3In general, this depends upon definitions of the regulations in the other releasing countries concerned. Since Japan does not have such laws or regulations, SMM applies the following definition: “Specially controlled industrial waste and waste delivered to controlled landfill sites (excluding designated inert waste (5 categories of inert waste) that should have been delivered to landfill sites for inert industrial waste, but was disposed of at controlled landfill sites due to the distance limitation).”
- *4Waste other than hazardous waste.
- *5Treatment methods outside of the Company were identified based on the written agreement with the disposal company and the manifest.
Breakdown of Industrial Waste(in Japan) by Type of Watste
|Name of activity||Targeted employees||Purpose, contents (simple overview)|
|EMS Internal Auditor Training Course||New internal environmental auditors||Training of new internal auditors for the EMS conforming to ISO 14001 (2015)|
|EMS Internal Auditor Course for updating to the ISO 14001 (2015) standard||Internal environmental auditors||Updating internal auditors with qualifications conforming to ISO 14001 (2004) to the 2015 version|
|Managers and supervisors, internal environmental auditors||Explanation of Japan’s mandatory standards and notification procedures|
(Environmental Laws, Basic)
|Managers and supervisors, internal environmental auditors||Promote understanding of the spirit and idea of Japan’s laws|
|Education of newly-appointed business site general managers||Newly-appointed business site general managers||Promote understanding of the importance of the relationship between corporations and the environment and raise self-awareness and environmen-tal awareness as the business site general manager|
|Conference for environment managers||Environment managers of each of the business sites||Improve knowledge of Japan’s environmental laws and regulations, enhance environmental management capabilities, raise self-awareness|
|Periodically send out information||Business site general managers||Provide information about revisions of laws and important precedents by a periodical e-mail magazine|
|Compliance training||Business site general managers||Provide information about environment-related compliance and raise self-awareness|
|Education about environmental preservation for mid-career hires||Mid-career hires at the Head Office||Impart knowledge about the SMM Group’s environmental preservation initiatives|
|Education about environmental preservation for new employees||Newly hired management track employees at the Head Office||Impart knowledge about the SMM Group’s environmental preservation initiatives and raise self-awareness|
|Education about environmental preservation for newly-promoted section managers||Newly-promoted section managers||Provide information about the SMM Group’s environmental preservation initiatives and raise self-awareness|
|Periodic education about the Chemical Substances Control Law||Division environment managers||Overview of the Chemical Substances Control Law, checking for revision information, and prevent omissions of notification|
|Explanatory meeting: overseas chemical substance regulations||Head Office sales representatives||Impart knowledge to sales representatives about overseas chemical substance regulations and raise their self-awareness|
Laws Covered in the Environmental e-learning Courses
|Environmental Laws||Environmental Laws, Basic|
|Basic Environment Act||Basic Environment Act|
|−||Basic Act on Biodiversity|
|Basic Act on Establishing a Sound Material-Cycle Society||Basic Act on Establishing a Sound Material-Cycle Society|
|−||Act on the Promotion of Environmental Conservation Activities through Environmental Education|
|−||Law Concerning the Promotion of Business Activities with Environmental Consideration|
|−||Act on Promotion of Global Warming Countermeasures|
|Act on the Rational Use, etc. of Energy||Act on the Rational Use of Energy|
|Air Pollution Control Act (including the content of the Act on Pollution Prevention Systems in Specified Factories)||Air Pollution Control Act|
|Water Pollution Control Act||Water Pollution Control Act|
|Soil Contamination Countermeasures Act||−|
|PRTR Law||PRTR Law|
|Poisonous and Deleterious Substances Control Act||−|
|Waste Management and Public Cleansing Act||Waste Management and Public Cleansing Law|
|PCB Special Measures Law||−|
|−||Act on Promoting Green Procurement|
The SMM Group has established two e-learning courses on environmental laws with the objective of raising levels of compliance. Employees, especially managers and supervisors involved with environmental laws and regulations and internal environmental auditors, are taking part in those courses. The e-learning course on Japan’s main environmental laws covers ten laws that are deeply related to the businesses of the SMM Group and provides explanations of mandatory standards and notification procedures. As failing to comply with these requirements constitutes a violation of the law, employees must be certain to keep them in mind when conducting business. Given not only compliance with regulations and obligations, but also the voluntary risk management and information disclosure demanded of businesses today, the Group offers an e-learning course called Environmental Laws, Basic that serves as a stepping stone for properly conduct-ing business. This course covers 12 laws, including the Basic Environment Act and the Basic Act on Biodiversity.