2021 Mineral Reserves & Resources

Mineral Reserves & Resources
As at December 31, 2023 (unless otherwise noted)

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Gold Mineral Reserves^1,2,3,6

Copper Mineral Reserves^1,2,3,6

Silver Mineral Reserves^1,2,3,6

Gold Mineral Resources^1,3,6,7,8,9

Copper Mineral Resources^1,3,6,7,8,9

Silver Mineral Resources^1,3,6,7,8,9

Summary Gold Mineral Reserves^1,2,3

Mineral Reserves and Resources Endnotes

1. Mineral reserves (“reserves”) and mineral resources (“resources”) have been estimated as at December 31, 2023 (unless otherwise noted) in accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects (“NI 43-101”) as required by Canadian securities regulatory authorities. For United States reporting purposes, the SEC has adopted amendments to its disclosure rules to modernize the mineral property disclosure requirements for issuers whose securities are registered with the SEC under the Securities and Exchange Act of 1934, as amended (the “Exchange Act”). These amendments became effective February 25, 2019 (the “SEC Modernization Rules”) with compliance required for the first fiscal year beginning on or after January 1, 2021. The SEC Modernization Rules replace the historical property disclosure requirements for mining registrants that were included in SEC Industry Guide 7, which was rescinded from and after the required compliance date of the SEC Modernization Rules. As a result of the adoption of the SEC Modernization Rules, the SEC now recognizes estimates of “measured”, “indicated” and “inferred” mineral resources. In addition, the SEC has amended its definitions of “proven mineral reserves” and “probable mineral reserves” to be substantially similar to the corresponding Canadian Institute of Mining, Metallurgy and Petroleum definitions, as required by NI 43-101. U.S. investors should understand that “inferred” mineral resources have a great amount of uncertainty as to their existence and great uncertainty as to their economic and legal feasibility. In addition, U.S. investors are cautioned not to assume that any part or all of Barrick’s mineral resources constitute or will be converted into reserves. Mineral resource and mineral reserve estimations have been prepared by employees of Barrick, its joint venture partners or its joint venture operating companies, as applicable, under the supervision of Richard Peattie, Africa and Middle East Mineral Resource Manager, Chad Yuhasz, Latin America & Asia Pacific Mineral Resource Manager and Craig Fiddes, Lead - Resource Modeling, Nevada Gold Mines and reviewed by Simon Bottoms, Barrick’s Mineral Resource Management and Evaluation Executive. For 2023, reserves have been estimated based on an assumed gold price of US$1,300 per ounce, an assumed silver price of US$18.00 per ounce, and an assumed copper price of US$3.00 per pound and long-term average exchange rates of 1.30 CAD/US$, except at Tongon, where mineral reserves for 2023 were calculated using $1,500/oz; Hemlo, where mineral reserves for 2023 were calculated using $1,400/oz and at Zaldívar, where mineral reserves for 2023 were calculated using Antofagasta guidance and an updated assumed copper price of US$3.50 per pound. For 2022, reserves were estimated based on an assumed gold price of US$1,300 per ounce, an assumed silver price of US$18.00 per ounce, and an assumed copper price of US$3.00 per pound and long-term average exchange rates of 1.30 CAD/US$, except at Zaldívar, where mineral reserves for 2022 were calculating using Antofagasta guidance and an assumed copper price of US$3.30 per pound. Reserve estimates incorporate current and/or expected mine plans and cost levels at each property. Varying cut-off grades have been used depending on the mine and type of ore contained in the reserves. Barrick’s normal data verification procedures have been employed in connection with the calculations. Verification procedures include industry-standard quality control practices. Resources as at December 31, 2023 have been estimated using varying cut-off grades, depending on both the type of mine or project, its maturity and ore types at each property.
2. In confirming our annual reserves for each of our mineral properties, projects, and operations, we conduct a reserve test on December 31 of each year to verify that the future undiscounted cash flow from reserves is positive. The cash flow ignores all sunk costs and only considers future operating and closure expenses as well as any future capital costs.
3. All mineral resource and mineral reserve estimates of tonnes, Au oz, Ag oz and Cu tonnes are reported to the second significant digit.
4. Porgera mineral reserves and mineral resources are reported on a 24.5% interest basis, reflecting Barrick’s ownership interest in accordance with the Porgera Project Commencement Agreement (the “Commencement Agreement”) completed on December 22, 2023. The Commencement Agreement provided, among other things, for ownership of Porgera to be held in a new joint venture called New Porgera Limited, which is owned 51% by Papua New Guinea stakeholders and 49% by a Barrick affiliate, Porgera (Jersey) Limited (“PJL”). PJL is jointly owned on a 50/50 basis by Barrick and Zijin Mining Group and accordingly Barrick has a 24.5% ownership interest in the Porgera mine. Barrick Niugini Limited has retained operatorship of the mine. Barrick expects to include Porgera in the Company’s 2024 guidance when it reports its full year and fourth quarter results on February 14, 2024. For additional information, see Barrick’s press release entitled “Recommissioning Starts as Porgera Prepares to Resume Operations in Q1 2024” dated December 22, 2023.
5. Reko Diq mineral resources are reported on a 50% interest basis, reflecting Barrick’s ownership interest following the completion of the transaction allowing for the reconstitution of the project on December 15, 2022. This completed the process that began earlier in 2022 following the conclusion of a framework agreement among the Governments of Pakistan and Balochistan province, Barrick and Antofagasta plc, which provided a path for the development of the project under a reconstituted structure. The reconstituted project is held 50% by Barrick and 50% by Pakistani stakeholders. Barrick is the operator of the project. For additional information, see pages 41-42 of Barrick’s Third Quarter Report 2023.
6. 2023 polymetallic mineral resources and mineral reserves are estimated using the combined value of gold, copper and silver and accordingly are reported as gold, copper and silver mineral resources and mineral reserves.
7. For 2023, mineral resources have been estimated based on an assumed gold price of US$1,700 per ounce, an assumed silver price of US$21.00 per ounce, and an assumed copper price of US$4.00 per pound and long-term average exchange rates of 1.30 CAD/US$, except Zaldívar, where mineral resources for 2023 were calculated using Antofagasta guidance and an assumed copper price of US$4.20 per pound. For 2022, mineral resources were estimated based on an assumed gold price of US$1,700 per ounce, an assumed silver price of US$21.00 per ounce, and an assumed copper price of US$3.75 per pound and long-term average exchange rates of 1.30 CAD/US$, except at Zaldívar, where mineral resources for 2022 were calculated using Antofagasta guidance and an assumed copper price of US$3.75
8. All mineral resources are reported inclusive of mineral reserves.
9. Mineral resources which are not mineral reserves do not have demonstrated economic viability.
10. All measured and indicated mineral resource estimates of grade and all proven and probable mineral reserve estimates of grade for Au g/t, Ag g/t and Cu % are reported to two decimal places.
11. All inferred mineral resource estimates of grade for Au g/t, Ag g/t and Cu % are reported to one decimal place.