INPUT (Resources)
GRI 301-1 / 301-2 / 302-1 / 303-3 / 303-5
Raw Material Input
Percentage of Recycled Input Raw Materials Used: 2.26%
| Raw materials | (Total) 9,498 kt |
|---|---|
| Gold and silver ore (Hishikari Mine) | 175 kt |
| Copper concentrates | 1,558 kt |
| Nickel oxide ore | 7,496 kt |
| Nickel matte, etc. | 55 kt |
| Raw material for batteries | 75 kt |
| ALC raw material, incl. silica rock*1 | 80 kt |
| Hydrotreating catalyst raw material | 58 kt |
| Recycled Materials*2 | (Total) 220 kt |
|---|---|
| Copper scrap | 127 kt |
| Secondary zinc | 1 kt |
| Precious metals and other secondary materials | 6 kt |
| Electric arc furnace dust | 86 kt |
| Sludge and dust | 120t |
| ALC waste*1 | 19t |
| Materials | (Total) 2,150 kt |
|---|---|
| Silica sand (for copper smelting) | 124 kt |
| Chemicals (lime-based) | 1,361 kt |
| Chemicals (sodium-based) | 105 kt |
| Chemicals (magnesium-based) | 18 kt |
| Sulfuric acid | 453 kt |
| Cement, etc. | 89 kt |
- Data until September 2024 from Sumitomo Metal Mining Siporex Co., Ltd., which was transferred to another company
- Excludes materials recycled within plants.
Energy Input *1
| Total Energy Consumption | Energy Value | Consumption |
|---|
| Non-renewable energy sources | (Total) 19,838 TJ | |
|---|---|---|
| Heavy oil | 1,282 TJ | 31,755 kL |
| Coal/coke | 11,877 TJ | 453,802 t |
| Diesel/gasoline/kerosene | 951 TJ | 25,168 kL |
| LPG・LNG | 381 TJ | 7,607 t |
| City gas/natural gas | 645 TJ | 14,371,000 m3 |
| Purchased electricity | 4,686 TJ | 1,301,634 MWh |
| Purchased steam *2 | 16 TJ | 15,673 GJ |
| Renewable energy | (Total) 35TJ | |
| Solar power generation,binary power generation | 2 TJ | 487 MWh |
| Biomass steam | 31 TJ | 31,014 GJ |
| Biomass fuel | 2 TJ | 134 t |
- Fuel, heat, electricity, etc. consumed in business activities in Japan and overseas are included, and electricity consumption is converted into joules at 3.6 GJ per 1,000kWh
- Purchased steam includes purchased cold water
Total water withdrawal *1
Total water consumption from all areas *2
| Freshwater withdrawal | (Total) 35,628 ML *3 |
|---|---|
| Surface water (rivers) | 14,218 ML |
| Rainwater | 44 ML |
| Groundwater | 7,535 ML |
| Industrial water (water from another organization) | 13,453 ML |
| Tap water (water from another organization) | 379 ML |
| Seawater withdrawal | (Total) 158,037 ML |
Figures are rounded to the nearest whole number, so totals may not match.
- We identify and assess high-water stress areas using the WWF Water Risk Filter, and the results indicate that there are no areas of high-water stress at any of our business sites.
- Water consumption is estimated by subtracting the total water discharge from the total water withdrawal for each business site. There was no water storage, which would have a significant water-related impact.
- 1ML is equivalent to 1,000 m3
OUTPUT (Products & Emissions)
GRI 303-4 / 305-1 / 305-2 / 305-7 / 306-1 / 306-2 / 306-3 / G4-MM3
Products
Percentage of Products from Recycled Input: 7.84%
| Mineral ores from the Hishikari Mine | 30 kt |
| Electrolytic copper | 443 kt |
| Gold | 19t |
| Silver | 190t |
| Gypsum | 31 kt |
| Electrolytic nickel | 60 kt |
| Nickel sulfate | 9 kt |
| Nickel chloride | 1 kt |
| Electrolytic cobalt | 3 kt |
| Crude zinc oxide | 32 kt |
| Scandium oxide | 8t |
| Chromite | 65 kt |
| Sulphur | 27 kt |
| Ferronickel | 18 kt |
| Battery materials | 68 kt |
| Nickel powder | 109t |
| Ag/Pd powder | 1t |
| Sulfuric acid | 378 kt |
| Slag | 1,278 kt |
| Hydrotreating catalyst | 10 kt |
| ALC (Siporex)*1 | 159 ML*2 |
- Data until September 2024 from Sumitomo Metal Mining Siporex Co., Ltd., which was transferred to another company
- 1ML is equivalent to 1,000 m3
Emissions
Released into the Atmosphere
| GHG | (Total) 2,356 kt |
|---|---|
| Scope 1*1 (direct emissions) | 1,724 kt |
| Scope 2*2 (indirect emissions) | 632 kt |
| SOx | 1,452t |
| NOx | 1,419t |
| Soot and dust | 92t |
Discharge into water (total): 121t
| COD | 51t |
| BOD | 7t |
| Total phosphorus | 1t |
| Total nitrogen | 62t |
Release of Chemical Substances: 76t
| Atmosphere (PRTR) | 5.2t |
| Public water areas (PRTR) | 69.3t |
| Soil/landfills on business premises (PRTR) | 1.6t |
Total water discharge: 190,915 ML*2
| Discharge into seas*4 | 190,006 ML |
| Discharge into rivers | 847 ML |
| Sewerage, etc. | 61 ML |
Total Waste*5: 6,827 kt
Of which 6,730 kt is landfill on company premises and 2,374 t is PRTR substance transfers*6.
| Spoil | 31 kt |
| Leach sludge from CBNC, THPAL, etc. | 6,698 kt |
| Industrial waste (Japan) | 97 kt |
| Other | 2 kt |
- Both Japan and overseas figures are calculated based on the GHG Protocol, and emission factors are based on the Japanese law “Act on Promotion of Global Warming Countermeasures.”
- GHG emissions factors for electric power purchased in Japan are the adjusted emissions factors of electric suppliers.
GHG emissions factors for electricity purchased overseas are based on the current edition of the IEA Emissions Factors. - 1ML is equivalent to 1,000 m3
- Discharges into rivers flowing into enclosed seas are included in “Discharge into Seas.”
- Industrial waste treatment is commissioned to Group companies, and industrial waste is recycled for use as raw material. Accordingly, waste figures include some waste which was effectively not discharged outside the Group, in particular, hazardous sludge.
- Total transfers to sewerage and off-site transfers.
Trends in Final Disposal Amount of Industrial and Mining Waste in Japan
GRI 306-5
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 FY2024 was 59 kt, which was a decrease of approximately 11 kt from FY2023. The main factor behind this decrease was a decrease in the final disposal volume of iron clinker at Shisaka Smelting Co., Ltd. (Although the volume of iron clinker as industrial waste increased, the final disposal volume of iron clinker decreased due to the increased use of raw materials.)
Waste by Type and Treatment Method (FY2024)
GRI 306-3 / 306-4 / 306-5
Waste by Treatment Method (Hazardous*1 / Non-hazardous*2)
(unit: kt)
| Hazardous | Non-hazardous | Total | ||
|---|---|---|---|---|
| Treatment method*3 | Recycling | 7.9 | 29.4 | 37.3 |
| Incineration (with heat recovery) | 0.3 | 1.3 | 1.5 | |
| Incineration (without heat recovery) | 0.0 | 0.1 | 0.1 | |
| Landfill | 54.0 | 6,731.6 | 6,785.6 | |
| Volume reduction, etc. | 2.0 | 0.8 | 2.8 | |
| Total | 64.3 | 6,763.1 | 6,827.4 | |
(unit: kt)
| Landfill on company premises / Contracted disposal | Landfill (SMM premises) | 6,730 |
|---|---|---|
| Contracted disposal | 98 |
Industrial waste treatment is commissioned to Group companies, and industrial waste is recycled for use as raw material. Accordingly, waste figures include some waste which was effectively not discharged outside the Group, in particular, hazardous sludge.
- In 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)” - Waste other than hazardous waste
- Treatment methods outside of the Company were identified based on the written agreement with the disposal company and the manifest
Breakdown of Industrial Waste by Type of Waste (SMM Japan Group)
