Our Performance
Performance Table
Below are the metrics that describe our ESG performance for the last three years. The reference column indicates the alignment of that specific metric with the Sustainability Accounting Standards Board (SASB) indicators. In instances where there is no SASB metric suggested, we include the corresponding reference to the metric suggested by the GRI standards. Note that in some cases a single metric aligns with both the SASB and GRI standards but only the SASB reference is noted.
All references that start with EM-MM refer to SASB metrics for the Extractives & Minerals Processing Sector – Metals & Mining.
We welcome feedback at sustainabledevelopment@cameco.com
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTE | BOUNDARY |
| Revenues | thousand CAD $ | 1,868,003 | 2,587,758 | 3,135,772 | GRI 201-1 | Cameco’s sale of products and services | |
| Total mining production | lbs U308 | 10,364,262 | 17,638,201 | 23,422,690 | EM-MM-000.A | Cameco’s equity share of production from Cameco operated facilities. Cameco’s share of production from Joint Venture Inkai mine in Kazakhstan is not included. | Cameco equity share of operating facilities excluding JV Inkai |
| Production in our fuel services division (includes results for UF6, UO2, and fuel fabrication) | kgU | 13,014,111 | 13,275,966 | 13,451,825 | EM-MM-000.A | Cameco equity share of operating facilities |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTE | BOUNDARY |
| Water withdrawal | m3 | 18,281,491 | 15,114,495 | 13,606,536 | GRI 303-3a | Cameco withdraws water from surface water, collects groundwater, and withdraws water from municipal water utilities in the areas where we operate. Rainwater that comes into contact with our operations is intercepted or collected and stored, which is reflected in our water withdrawal volumes. Cameco does not withdraw wastewater directly from other organizations. Water withdrawal from our exploration activities is not included. | Cameco operated facilities (100% basis) |
| Water withdrawal by source | |||||||
| Surface Water | m3 | 6,374,011 | 3,900,302 | 1,013,490 | GRI 303-3a | Cameco operated facilities (100% basis) | |
| Groundwater | m3 | 11,412,051 | 10,849,595 | 12,406,641 | GRI 303-3a | Cameco operated facilities (100% basis) | |
| Third-Party | m3 | 495,430 | 364,234 | 186,406 | GRI 303-3a | Third party water includes municipal water suppliers and municipal wastewater treatment plants, public or private utilities, and other organizations involved in the provision, transport, treatment, disposal, or use of water and effluent. | Cameco operated facilities (100% basis) |
| Water withdrawal by categorization | The volume of third-party water withdrawn for 2022 and 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 325,745 m³ to 495,430 m³ in 2022, and from 423,475 m³ to 364,234 m³ in 2023. This change is due to a correction in data at our Port Hope Facility. | ||||||
| Fresh water | m3 | 16,975,906 | 14,017,288 | 12,396,909 | GRI 303-3b | Fresh water is defined as water with an average total dissolved solids (TDS) less or equal to 1,000 mg/L for the purpose of this indicator. | Cameco operated facilities (100% basis) |
| Other Water | m3 | 1,305,585 | 1,097,267 | 1,209,627 | GRI 303-3b | Cameco operated facilities (100% basis) | |
| Withdrawal in Areas of High Water Stress, by categorization | m3 | - | Baseline water stress categorization is determined using the World Resources Institute Aqueduct Water Risk Atlas, available online at: https://www.wri.org/aqueductAreas. Cameco’s North Butte operation is classified in an area of high water stress (3–4). Cameco withdraws fresh water from a drinking water aquifer at North Butte for use in firewater suppression systems, bathrooms, and sinks within surface buildings. The quantity of water withdrawn is < 5,000 m³ annually. This is such a small proportion of total water withdrawn that it is not measurable within the corporate total. | ||||
| Freshwater | m3 | 0 | 0 | 0 | EM-MM-140a.1 | Cameco operated facilities (100% basis) | |
| Other water | m3 | 572,901 | 330,659 | 872,253 | - | The volume of other water withdrawn in areas of High Water Stress for 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 357,126 m³ to 330,659 m³. This change is due to corrections in the calculation of groundwater intake for Smith Ranch-Highland. | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTE | BOUNDARY |
| Water discharges | m3 | 1,282,977 | 14,172,103 | 12,187,093 | GRI 303-4a | This indicator presents the annual volume of planned water discharge in cubic metres (m³) by destination (i.e. surface water, municipal treatment facilities, land, evaporation pond, or deep disposal well) and treatment method (i.e. treated by Cameco, treated by municipal authorities, clean, or untreated). Cameco does not reuse water produced by other organizations. The annual volume of water discharged to evaporation from our Smith Ranch-Highland operation is not included. | |
| Water discharged to | |||||||
| Surface Water | m3 | 15,180,127 | 13,159,562 | 11,289,700 | GRI 303-4a | Cameco operated facilities (100% basis) | |
| Groundwater | m3 | 904,674 | 804,787 | 706,515 | GRI 303-4a | Cameco operated facilities (100% basis) | |
| Third-Party | m3 | 198,176 | 207,754 | 190,878 | GRI 303-4a | The volume of water discharged to third-party for 2022 and 2023 has been restated from what was reported in the 2023 Sustainability Report, from 168,263 m³ to 198,176 m³ in 2022 and from 444,905 m³ to 207,754 m³ in 2023. At Port Hope Conversion Facility, issues were identified in the meter on sewer discharge, so the values have been recalculated | Cameco operated facilities (100% basis) |
| Water discharged by categorization | |||||||
| Fresh water | m3 | 14,157,851 | 10,622,553 | 8,852,731 | GRI 303-4b | Cameco operated facilities (100% basis) | |
| Other Water | m3 | 2,125,126 | 3,549,550 | 3,334,362 | GRI 303-4b | The volume of other water discharged in 2023 has been restated from what was reported in our 2023 Sustainability Report, from 3,793,230 m³ to 3,549,550 m³. This change is due to corrections in the calculation of groundwater intake for Smith Ranch Highland and the recalculation of sewer discharge volumes at Port Hope. | Cameco operated facilities (100% basis) |
| Discharge in Areas of High Water Stress | |||||||
| Fresh water | m3 | 0 | 0 | 0 | GRI 303-4c | Cameco operated facilities (100% basis) | |
| Other Water | m3 | 585,655 | 584,087 | 688,716 | GRI 303-4c | We only dispose of water into licensed disposal wells in our U.S. operations. The volume of other water discharged in areas of high water stress for 2022 and 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 142,536 m³ to 585,655 m³ in 2022, and from 147,163 m³ to 584,087 m³ in 2023, as we are now including Smith Ranch-Highland. | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Number of incidents of non-compliance associated with water quality permits, standards, and regulations | number | 0 | 0 | 0 | EM-MM-140a.2 | Incidents of non-compliance associated with water quality permits, standards, and regulations are water-related incidents that resulted in formal enforcement actions. | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Weight of tailings and mineral waste | tonnes | 110,055 | 202,981 | 285,231 | The weight of tailings and mineral waste generated for 2022 and 2023 has been adjusted due to a change in policy/methodology from what was reported in the 2023 Sustainability Report, from 50,986 tonnes to 110,055 tonnes in 2022, and from 138,561 tonnes to 202,981 tonnes in 2023. This is due to a change in reporting. Previously, we had reported net changes, which could include adjustments based on surveys or other assessments. We are now reporting only the annual weight produced (generated). | Cameco operated facilities (100% basis) | |
| Tailings waste produced | tonnes | 30,021 | 137,431 | 199,039 | EM-MM-150a.5 | Includes the amount of tailings generated by Cameco operated facilities. | Cameco operated facilities (100% basis) |
| Waste rock produced | tonnes | 70,112 | 50,173 | 75,699 | EM-MM-150a.6 | The weight of waste rock generated for 2022 and 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 14,416 tonnes to 70,112 tonnes in 2022 and from -17,373 tonnes to 50,173 tonnes in 2023. This is due to a change in reporting policy. Previously, we had reported net changes, which could include adjustments based on surveys or other assessments. We are now reporting only the annual weight produced (generated). | Cameco operated facilities (100% basis) |
| Other mineral waste | tonnes | 9,922 | 15,377 | 10,523 | Cameco operated facilities (100% basis) | ||
| Percent of tailings waste recycled | percent | 0% | 0% | 0% | Cameco operated facilities (100% basis) | ||
| Number of tailings impoundments (tailings management facilities) | number | 4 | 4 | 4 | EM-MM-540a.1 | Cameco has four tailings facilities but two are in-pit facilities. In-pit facilities are below the ground surface, so we do not classify them with respect to the consequence of a dam failure. | Cameco operated facilities (100% basis) |
| Number of tailings impoundments, broken down by Canadian Dam Association Consequence Classification Rating | number | Significant | Significant | High | EM-MM-150a.3 | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2023 | REFERENCE | NOTES | BOUNDARY |
| Non-mineral wastes | tonnes | 10,704 | 11,637 | 13,264 | EM-MM-150a.4 | Non-mineral waste does not include solid waste generated as tailings, water treatment sludge and slime, or waste rock. The total amount of contaminated, low-level radioactive, nonhazardous, and hazardous waste generated in each category is separated and presented by disposal method: diverted, landfilled, or stored on site. Diverted materials include those that are recycled, reused, repurposed, or reprocessed. We separate waste into these disposal categories using internal tracking systems that track the inventory of waste on site and the transfer of waste off site. The amount of waste transferred off site is confirmed through information provided by the receiving organization. | Cameco operated facilities (100% basis) |
| Weight of contaminated waste | tonnes | 6,199 | 7,495 | 6,612 | Contaminated waste includes industrial materials from our mining operations that have become contaminated with radioactive material. Includes industrial materials, such as protective equipment, paper, cardboard, equipment, tools, metal, plastic, concrete, sand, sludges, insulation, and wood. Contaminated waste also includes 11 e(2) byproduct generated at our U.S. operations. | Cameco operated facilities (100% basis) | |
| Contaminated waste diverted | tonnes | 0 | 0 | 0 | Cameco operated facilities (100% basis) | ||
| Contaminated waste landfilled or stored | tonnes | 6,199 | 7,495 | 6,612 | Cameco operated facilities (100% basis) | ||
| Weight of low-level radioactive waste | tonnes | 2,751 | 1,899 | 1,769 | Low-level radioactive waste includes materials from our Fuel Services Division that have become contaminated with radioactive material and are more radioactive than clearance levels and exemption quantities allow. Cameco does not generate intermediate or high-level radioactive waste. | Cameco operated facilities (100% basis) | |
| Low-level radioactive waste diverted | tonnes | 1,468 | 1,537 | 1,773 | Cameco operated facilities (100% basis) | ||
| Low-level radioactive waste landfilled or stored | tonnes | 1,283 | 362 | -4 | Cameco operated facilities (100% basis) | ||
| Weight of non-hazardous waste | tonnes | 1,566 | 1,747 | 4,586 | GRI 306-3 | Non-hazardous waste includes domestic, commercial, and industrial materials that become waste, such as plastic, tin, paper and cardboard, tires, metal, wood pallets, kitchen waste, and wood. | Cameco operated facilities (100% basis) |
| Non-hazardous waste diverted | tonnes | 418 | 384 | 409 | GRI 306-4 | The volume of non-hazardous waste diverted for 2022 and 2023 has been adjusted due to an error from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 562 tonnes to 418 tonnes in 2022, and from 541 tonnes to 384 tonnes in 2023, as wood that is incinerated was previously being reported as nonhazardous waste diverted but is now being classified as non-hazardous waste landfilled or stored and electronic waste recycled was previously included and is now being reported under hazardous waste recycled to align with GRI 306-4 guidance. | Cameco operated facilities (100% basis) |
| Non-hazardous waste landfilled or stored | tonnes | 1,148 | 1,362 | 4,177 | GRI 306-5 | The volume of non-hazardous waste landfilled or stored for 2022 and 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 1,006 tonnes to 1,148 tonnes in 2022, and from 1,209 tonnes to 1,362 tonnes in 2023, wood that is incinerated was previously being reported as non-hazardous waste diverted but is now being classified as non-hazardous waste landfilled or stored. | Cameco operated facilities (100% basis) |
| Weight of hazardous waste | tonnes | 188 | 497 | 297 | EM-MM-150a.7 | Hazardous waste includes materials with hazardous properties that may have negative effects to human health or the environment. It includes materials such as used petroleum fuels (oil, diesel, gas), paint and paint-related materials, compressed gas cylinders, and light fixtures. Port Hope conversion facility generates small volumes of batteries and electronic waste which are recycled by a third party but not included in the total weight shown here. The volume of hazardous waste generated in 2023 has been adjusted from 494 tonnes in the 2023 Sustainability Report to 497 tonnes due to an error in classification of some electronic waste. | Cameco operated facilities (100% basis) |
| Hazardous waste diverted | tonnes | 113 | N/A | N/A | GRI 306-4 | To align with SASB indicator EM-MM-150a.8, Cameco now reports hazardous waste recycled, rather than diverted. The most notable difference between the definition of “diverted” and “recycled” is that recycled excludes materials incinerated. We have not determined the recycled volumes for prior years. | Cameco operated facilities (100% basis) |
| Hazardous waste recycled | tonnes | N/A | 142 | 159 | EM-MM-150a.8 | The volume of hazardous waste recycled for 2023 has been adjusted from 139 tonnes in the 2023 Sustainability Report to 142 tonnes due to an error in classification of some electronic waste. | Cameco operated facilities (100% basis) |
| Hazardous waste landfilled, stored or incinerated | tonnes | 75 | 355 | 138 | GRI 306-5 | Cameco operated facilities (100% basis) | |
| Number of significant incidents associated with hazardous materials and waste management | count | NR | 0 | 0 | EM-MM-150a.9 | Cameco defines a significant waste incident as an environmental incident that results in or has a reasonable potential to have a significant environmental impact (impairment of ecosystem function), result in current and future remediation costs exceeding $10 million, or results in a significant environmental fine (>$100,000). | Cameco operated facilities (100% basis) |
Cameco’s greenhouse gas (GHG) emissions are presented as tonnes of carbon dioxide equivalents (CO₂e). CO₂e is used to compare the emissions from various GHG sources based on their global warming potential (GWP). Cameco adopted the GWPs published by Environment and Climate Change Canada (ECCC) and the United States Environmental Protection Agency (U.S. EPA), which reference the International Panel on Climate Change (IPCC). In alignment with changes at ECCC, Cameco has begun transitioning to GWPs from IPCC’s Fifth Assessment Report for Canadian operations in the 2022 figures, whereas U.S. operations continue to use GWPs from IPCC’s Fourth Assessment Report in alignment with U.S. EPA guidance at the time of calculation. Cameco’s significant sources of direct (Scope 1) GHG emissions include those generated by the consumption of fuel from nonrenewable sources and industrial processes. Emission factors are country- and fuel-specific. For our Canadian operations, we have used emission factors published by ECCC through the Greenhouse Gas Reporting Program. For our U.S. operations, we use the emission factors published by the U.S. EPA in the most recent Emission Factors for Greenhouse Gas Inventories document. Indirect GHG emissions are calculated by applying a utility- or region-specific emission factor to the amount of electricity purchased from that area, which is determined through utility invoices.
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Gross global Scope 1 emissions (equity share) | tonnes CO2e | 102,250 | 108,835 | 139,305 | EM-MM-110a.1 | Historical values are adjusted year-to-year due to refinements in calculation methodology and emission factors. | Cameco equity share of operating facilities (includes JV Inkai) |
| Scope 2 emissions (equity share - location based) | tonnes CO2e | 138,852 | 148,703 | 181,367 | GRI 305-2 | Under the equity share approach, we have adjusted the GHG emissions reported to align with our financial ownership, specifically: 69.805% of McArthur River mine, 83.333% of Key Lake mill, 54.547% of Cigar Lake mine, and we have included 49% of emissions from Westinghouse and 40% of emissions from JV Inkai. | Cameco equity share of operating facilities (includes JV Inkai) |
| Gross global Scope 1 emissions (operational control) | tonnes CO2e | 122,019 | 128,673 | 131,381 | GRI 305-1 | Operational control basis means we report 100% of GHG emissions from Cameco operated facilities regardless of financial ownership. | Cameco operated facilities (100% basis) |
| Scope 2 emissions (operational control - market-based) | tonnes CO2e | 170,875 | 181,397 | 178,306 | GRI 305-2 | A market-based approach reflects the emissions from electricity that we have purposefully chosen and includes reductions to GHG emissions through emissions trading or purchases such as Clean Energy Credits. | Cameco operated facilities (100% basis) |
| Scope 2 emissions (operational control - location-based) | tonnes CO2e | 170,875 | 188,324 | 185,488 | GRI 305-2 | A location-based approach reflects the average emissions intensity of grids on which the energy consumptions occurs. | Cameco operated facilities (100% basis) |
| Scope 3 emissions | tonnes CO2e | N/A | 480,000 | 620,000 | We report Scope 3 emissions using the operational control approach. This means we include the emissions of any owned but non-operated assets (Inkai, Westinghouse) as investments in Scope 3 Category 15 and we do not include their upstream/downstream emissions in other categories of Scope 3. Note that there is some overlap in information reported in the Scope 1 and 2 equity share approach and in Scope 3 using operational approach. To avoid double-counting, Scope 3 emissions should be consolidated with Cameco’s Scope 1 and 2 emissions using the operational control approach. Our 2023 Scope 3 emissions have been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 500,000 tonnes CO₂e to 480,000 tonnes CO₂e. This adjustment is due to a refinement in our approach for calculating Scope 3 emissions. The most significant increases in Scope 3 emissions between 2024 and 2023 are related to the inclusion of WEC (58,000 tonnes CO₂e) and changes in our market uranium purchases (63,500 tonnes CO₂e). While the total volume of purchases did not change significantly in 2024, the countries of origin were different. Each country has a different uranium production emissions intensity. |
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| Total energy consumed | GJ | 3,511,677 | 3,735,805 | 3,840,685 | EM-MM-130a.1 | Cameco’s energy consumption includes fuels and electricity. Energy consumed as fuel includes propane, natural gas, diesel, and gasoline and is calculated by applying a fuel- and region-specific energy content factor to the consumed volume. Cameco does not utilize renewable energy sources directly. Energy consumed as electricity is converted from kilowatt hours (kWh) to gigajoules (GJ) using a conversion factor of 0.0036 GJ/kWh. Cameco does not sell energy as electricity, heating, cooling, or steam. Operational-control basis means we report 100% of energy consumption from Cameco-operated facilities regardless of financial ownership. | Cameco operated facilities (100% basis) |
| Grid electricity | percent | 42% | 44% | 44% | EM-MM-130a.1 | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Scope 1 emissions covered under emissions-limiting regulations (operational control) | percent | 97% | 97% | 97% | EM-MM-110a.1 | Cameco operated facilities (100% basis) | |
| Scope 1 emissions covered under emissions-limiting regulations (equity share) | percent | 75% | 76% | 53% | EM-MM-110a.1 | Cameco operated facilities (100% basis) |
Air emissions are reported only for operated facilities in Canada that reach NPRI (National Pollutant Release Inventory) release based threshold quantities. Air emissions from our in situ recovery operations in the U.S. are not material for this indicator and are not included. Air emissions of NOx, SO₂, CO, VOCs, PM, PM₁₀, PM₂.₅ and NH₃ are calculated using the guidance provided by ECCC through the National Pollutant Release Inventory. The total air emissions for these constituents include air emissions released through point sources such as process stacks, storage and handling, fugitive emissions, and as a result of road dust. Air emissions of uranium and Hydrogen Fluoride include air emissions released through point sources. We conduct ambient air monitoring and stack sampling. By taking samples from ambient air near our facilities, we can detect the presence and concentration of specific substances of concern, including uranium suspended in air, to determine air quality. At all operating mines and facilities, we collect and verify representative samples of emissions at the point of discharge (i.e., the stack) to determine the total mass of pollutants emitted to the atmosphere. Stack sampling is typically completed more frequently at operations in or near communities compared to remote industrial facilities.
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Carbon monoxide (CO) | tonnes | 32 | 87 | 55 | EM-MM-120a.1 | Cameco operated facilities in Canada (100% basis) | |
| NOx (excluding N2O) | tonnes | 189 | 182 | 241 | EM-MM-120a.1 | Cameco operated facilities in Canada (100% basis) | |
| SOx | tonnes | 63 | 0 | 0 | EM-MM-120a.1 | Cameco operated facilities in Canada (100% basis) | |
| Particulate matter (PM10) | tonnes | 196 | 227 | 215 | EM-MM-120a.1 | Cameco operated facilities in Canada (100% basis) | |
| Volatile organic compounds (VOCs) | tonnes | 28 | 77 | 93 | EM-MM-120a.1 | Cameco operated facilities in Canada (100% basis) | |
| Ammonia (NH3) | tonnes | 42 | 80 | 97 | - | Cameco operated facilities in Canada (100% basis) | |
| Uranium | tonnes | 0.05 | 0.28 | 0.64 | - | Cameco operated facilities in Canada (100% basis) | |
| Hydrogen fluoride | tonnes | 0.55 | 0.48 | 0.51 | RT-CH-120a.1 |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Proven reserves in or near sites with protected conservation status or endangered species habitat | percent | 39% | 42% | 41% | EM-MM-160a.3 | Protected conservation status or endangered species habitat in alignment with SASB Standards definition. | Cameco ownership of deposits |
| Probable reserves in or near sites with protected conservation status or endangered species habitat | percent | 51% | 58% | 58% | EM-MM-160a.3 | Cameco ownership of deposits |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Percentage of mine sites where acid-generating seepage into surrounding surface water and/or groundwater is: | |||||||
| Predicted to occur | percent | 17% | 20% | 25% | EM-MM-160a.2 | The percentage of mine sites where acid-generating seepage is predicted to occur in 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 17% to 20%. This change is due to a previous accounting error. | Cameco operated facilities (100% basis) |
| Actively mitigated | percent | 17% | 20% | 0% | EM-MM-160a.2 | Active mitigation includes placing waste rock on a lined facility and collecting seepage. | Cameco operated facilities (100% basis) |
| Under treatment or remediation | percent | 0% | 0% | 0% | EM-MM-160a.2 | Cameco operated facilities (100% basis) | |
| Percentage of annual production output in metric tons (on an equity share basis) where acid-generating seepage into surrounding surface water and/or groundwater is: | Cameco operated facilities (100% basis) | ||||||
| Predicted to occur | percent | 66% | 38% | 34% | EM-MM-160a.2 | Cameco operated facilities (100% basis) | |
| Actively mitigated | percent | 66% | 38% | 0% | EM-MM-160a.2 | Active mitigation includes placing waste rock on a lined facility and collecting seepage. The percentage of mine sites where acid-generating seepage is actively mitigated in 2023 has been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 17% to 20%. This change is due to a previous accounting error. | Cameco operated facilities (100% basis) |
| Under treatment or remediation | percent | 0% | 0% | 0% | EM-MM-160a.2 | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Terrestrial acreage disturbed | hectares | 3,202 | 3,202 | 3,238 | EM-MD-160a.3 | Cameco’s land, leased and owned, currently in use and not yet rehabilitated. This indicator excludes advanced uranium projects (Kintyre, Yeelirrie, Millennium), office structures, exploration activities, operations in which Cameco does not have operational control, or rented facilities that Cameco operates (Cobourg). The definition of land disturbed and not yet rehabilitated is dependent on the jurisdiction of the operation. In Saskatchewan, total land disturbed and not yet rehabilitated is accepted by regulators as “Developed” land. In the U.S., total land disturbed and not yet rehabilitated is defined by regulators as “Affected Area.” For Ontario, total land disturbed is equal to the licensed area of the facility. | Cameco operated facilities (100% basis) |
| Terrestrial acreage restored | hectares | 0 | 0 | 0 | EM-MD-160a.3 | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| mSv/year | 0.91 | 1.13 | 0.99 | - | The average radiation dose is an arithmetic average of the annual effective doses received by all workers monitored for radiation at Cameco operated facilities at our mining, milling, and fuel services divisions in Saskatchewan, Ontario, and the US. | Cameco operated facilities (100% basis) | |
| Avg. radiation dose to contractors | mSv/year | 0.37 | 0.35 | 0.36 | - | Cameco operated facilities (100% basis) | |
| Avg. radiation dose to employees and contractors | mSv/year | 0.63 | 0.73 | 0.65 | - | Cameco operated facilities (100% basis) | |
| Total Recordable Injury Rate (TRIR) | TRIR as defined by US OSHA. | Cameco operated facilities (100% basis) | |||||
| TRIR employees | incidents per 200,000 hours worked | 1.43 | 1.98 | 1.87 | EM-MM-320a.1 | Cameco operated facilities (100% basis) | |
| TRIR contractors | incidents per 200,000 hours worked | 3.05 | 3.01 | 3.08 | EM-MM-320a.1 | Cameco operated facilities (100% basis) | |
| TRIR combined (all Cameco) | incidents per 200,000 hours worked | 1.96 | 2.30 | 2.26 | - | ||
| Fatality rate employees | fatalities per 200,000 hours worked | 0 | 0 | 0 | EM-MM-320a.1 | ||
| Fatality rate contractors | fatalities per 200,000 hours worked | 0 | 0 | 0 | EM-MM-320a.1 | ||
| Average hours of health, safety, and emergency response training for full-time employees | hours | 41 | 32 | 33 | EM-MM-320a.1 | ||
| Average hours of health, safety, and emergency response training for contractors | hours | 18 | 17 | NR | EM-MM-320a.1 |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Number of transport incidents | number | 0 | 0 | 0 | RT-CH-540a.2 | Transport incidents include any transport incident that involves a release or potential release, per Section 8.2. of the Transportation of Dangerous Goods Regulation in Canada or 49 CFR 171.15 in the US. | Cameco controlled transportation |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Total number of employees | number | 2,424 | 2,638 | 2,884 | EM-MM-000.B | This indicator reports the total number of regular and temporary full- and part-time employees. | Cameco operated facilities (100% basis) |
| Total number of contractors | number of FTEs | 983 | 998 | 1,136 | EM-MM-000.B | Full time equivalent (FTE) contractors is equal to the number of contractor hours divided by 2,000 hours, as 2,000 hours is deemed the number of hours for a full-time equivalent employee. | Cameco operated facilities (100% basis) |
| Voluntary turnover rate | percent | 7% | 5% | 6% | CG-EC-330a.2 | Turnover is calculated on regular full- and part-time employees. | Cameco operated facilities (100% basis) |
| Involuntary turnover rate | percent | 1% | 1% | 2% | CG-EC-330a.2 | Cameco operated facilities (100% basis) |
Diversity information for employees is only maintained on all regular and temporary full and part time in Canada. Our US operations are no longer required to file their equity information as the operations have less than 100 employees.
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Total workforce | |||||||
| Women | percent | 24% | 25% | 25% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Indigenous | percent | 25% | 25% | 25% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Visible Minority | percent | 8% | 9% | 9% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Persons with Disabilities | percent | 3% | 2% | 2% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Management | Management includes select professional and supervisory positions, and all manager positions and above. | ||||||
| Women | percent | 27% | 29% | 29% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Indigenous | percent | 5% | 6% | 7% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Visible Minority | percent | 7% | 9% | 8% | GRI 405-1 | Cameco operated facilities (100% basis) | |
| Persons with Disabilities | percent | 1% | 1% | 2% | GRI 405-1 | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Employees covered under collective bargaining agreements | percent | 26% | 29% | 29% | EM-MM-310a.1 | Key Lake and McArthur River’s collective agreement expires on December 31, 2025. Port Hope conversion facility’s two collective agreements expire in June 2025 and the Cameco Fuel Manufacturing collective agreement expires in June 2027. | Cameco operated facilities (100% basis) |
| Employees covered under collective bargaining agreements in Canada | percent | 29% | 30% | 29% | EM-MM-310a.1 | Cameco operated facilities (100% basis) | |
| Employees covered under collective bargaining agreements outside of Canada | percent | 0% | 0% | 0% | EM-MM-310a.1 | Cameco operated facilities (100% basis) | |
| Number of strikes and lockouts | number | 0 | 0 | 0 | EM-MM-310a.2 | Work stoppages involving 1,000 or more workers lasting one full shift or longer | Cameco operated facilities (100% basis) |
| Duration of strikes and lockouts | worker days idle | 0 | 0 | 0 | EM-MM-310a.2 | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Number of non-technical delays | number | 0 | 3 | 2 | EM-MM-210b.2 | Non-technical delays are defined as all delays that are not technical in nature that result in production interruptions. The non-technical delays in 2023 were related to forest fires in close proximity to our Key Lake Mill and supply chain issues with N₂ and H₂ for UO₂ production at Port Hope. The non-technical delays in 2024 were due to shortages of skilled labour and supply chain issues at our McArthur River mine. The number of non-technical delays for 2023 have been adjusted from what was reported in our 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 2 to 3. This change is due to a calculation error. | Cameco operated facilities (100% basis) |
| Duration of non-technical delays | days | 0 | 53 | 86 | EM-MM-210b.2 | The number of days of non-technical delays for 2023 have been adjusted from what was reported in the 2023 Sustainability Report. For comparative purposes, the data has been adjusted from 37 days to 53 days. This change is due to a calculation error. | Cameco operated facilities (100% basis) |
Reported data on public support is taken directly from polling Cameco undertakes in the various regions in which we operate. Data collection is undertaken by marketing research experts using industry-accepted methodology aimed at collecting unbiased opinions of community support. Accuracy of individual polls varies by region and from year to year based on individual sample sizes. It is important to note that polling questions in Ontario are framed in terms of support for Cameco operations specifically while other regions are asked about their support of the uranium industry more broadly.
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Saskatchewan | percent | 84% | 85% | 84% | - | Cameco operated facilities (100% basis) | |
| Northern Saskatchewan | percent | 75% | 83% | 83% | - | Cameco operated facilities (100% basis) | |
| Port Hope, Ontario | percent | 93% | N/A | 91% | - | Cameco operated facilities (100% basis) | |
| Blind River, Ontario | percent | N/A | N/A | 98% | - | Cameco operated facilities (100% basis) | |
| Nebraska | percent | N/A | N/A | N/A | - | Cameco operated facilities (100% basis) | |
| Wyoming | percent | N/A | N/A | N/A | - | Cameco operated facilities (100% basis) |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Proved reserves in or near Indigenous land | percent | 77% | 78% | 77% | EM-MM-210a.2 | Cameco defines Indigenous Land as Indigenous Territory, which is overlapping within the area of our northern Saskatchewan operations. Per the constitution of Kazakhstan, the land is owned by the state and there are no groups designated as Indigenous. | Cameco ownership of deposits |
| Probable reserves in or near Indigenous land | percent | 76% | 80% | 81% | EM-MM-210a.2 | Cameco ownership of deposits | |
| Indigenous employees in all positions at Northern Saskatchewan Operations | percent | 50% | 50% | 51% | - | Cameco operated facilities in Saskatchewan | |
| Indigenous employees in management positions at Northern Saskatchewan Operations | percent | 13% | 16% | 20% | - | Cameco operated facilities in Saskatchewan | |
| Progressive Aboriginal Relations Achievement Level | Three-year cycle | Gold | Gold | - | The Canadian Council of Aboriginal Business (CCAB) promotes the full involvement of Indigenous people in Canada's economy by building bridges between corporate Canada and Indigenous communities. Progressive Aboriginal Relations (PAR) recognized performance in the areas of Indigenous employment, business development, individual capacity, and community relations. Cameco has been awarded the CCAB’s PAR gold level distinction since 2001 on a three-year certification cycle. | Cameco operated facilities in Saskatchewan |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Percentage of proven reserves in or near areas of conflict | percent | 0% | 0% | 0% | EM-MM-210a.1 | Cameco ownership of deposits | |
| Percentage of probable reserves in or near areas of conflict | percent | 0% | 0% | 0% | EM-MM-210a.1 | Cameco ownership of deposits |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| New employees who have completed Code of Conduct and Ethics course | percent | 100% | 100% | 100% | - | ||
| Targeted employees who have completed annual Code of Conduct and Ethics refresher course | percent | 100% | 100% | 100% | - | Employees in certain functional areas include all directors and above, as well as employees who work in supply chain management, human resources, tax, treasury, finance, investor relations, business technology services, marketing, corporate development, legal, and executive offices, must complete a mandatory online Code of Conduct and Ethics (Code) refresher training course, including the requirement to adhere to the Code and report any potential, perceived, or actual conflicts of interest. |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Percentage of employees who received cybersecurity training | percent | 100% | 100% | 100% | - |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Production in countries that have the 20 lowest rankings in Transparency International’s Corruption Perception Index | tonnes | 0 | 0 | 0 | EM-MM-510a.2 |
| INDICATOR | UNITS | 2022 | 2023 | 2024 | REFERENCE | NOTES | BOUNDARY |
| Proportion of services procured by local providers by Cameco | percent | 66% | 63% | 59% | GRI 204-1 | ||
| Proportion of services procured by local providers in: | Local supplier – Is defined differently for each of Cameco’s operating locations as follows: | ||||||
| Northern Saskatchewan | percent | 80% | 74% | 71% | GRI 204-1 | Northern Saskatchewan local supplier – A company or joint venture that is at least 50% owned by people or communities from the Northern Saskatchewan Administration District. | |
| Ontario | percent | 50% | 52% | 46% | GRI 204-1 | Ontario local supplier – One located in the province of Ontario. | |
| US | percent | 51% | 50% | 44% | GRI 204-1 | US local supplier – A supplier located in the same state as the US mine operations. For Crow Butte operations, it is a supplier located in the state of Nebraska. For Smith Ranch-Highland operations it is a supplier located in the state of Wyoming. |