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Reporting assumptions

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Ownership basis

Show the full project inventory before ownership adjustment.

Display scale

Display contained quantities in millions of ounces or tonnes.

Resource treatment

Normalise Resources to exclude Reserves: where a project is flagged inclusive, net Reserves out of Resources so the figure is additional Resources beyond Reserves. Unknown-convention rows are shown as stated.

Resource total

Total Resource includes Inferred (JORC convention). Totals are re-derived from category rows wherever the document discloses them.

Recovery basis

Show the issuer's headline recoverable figure as reported. Lithium-brine reserves already have the brine-processing recovery factor applied; everything else is shown as stated.

Commodity view

Primary view: each commodity in its own contained unit (oz / t).

Salobo

Pará, Brazil · Producing · 90.0% ownedUnverified

Current R&R by category

Whole-project rollup at the latest vintage per category: printed project-level rows are preferred, and mining areas are summed (tonnes-weighted grade) only where the issuer prints no project-level row. Per-area and per-source detail in the Current R&R table below.

Au

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	11.56 Mt	0.25 g/t	0.09 Moz	31 Dec 2025
Indicated	613.22 Mt	0.22 g/t	4.34 Moz	31 Dec 2025
Inferred	197.67 Mt	0.30 g/t	1.91 Moz	31 Dec 2025
Total Resources	822.44 Mt	0.24 g/t	6.34 Moz	31 Dec 2025
Proved	349.67 Mt	0.34 g/t	3.82 Moz	31 Dec 2025
Probable	674.00 Mt	0.34 g/t	7.37 Moz	31 Dec 2025
Total Reserves	1,023.56 Mt	0.34 g/t	11.19 Moz	31 Dec 2025

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	11.56 Mt	0.48%	0.06 Mt Cu	31 Dec 2025
Indicated	613.22 Mt	0.45%	2.76 Mt Cu	31 Dec 2025
Inferred	197.67 Mt	0.60%	1.19 Mt Cu	31 Dec 2025
Total Resources	822.44 Mt	0.49%	4.00 Mt Cu	31 Dec 2025
Proved	349.67 Mt	0.59%	2.06 Mt Cu	31 Dec 2025
Probable

Cut-off grade

0.2500 % Cu · 0.2500 g/t Au

Price assumption

US$10000.00/t · US$9950.00/t

JORC code year

—

Peer benchmark — producing Cu projects (98 with resources)Resource size P73Resource grade P54View on grade-tonnage chart →

Percentile of this project's current total Resource among covered peers (P100 = largest / highest grade). Basis and Inferred toggles apply.

Data quality

Latest source: 20-F: 20-F · 31 Dec 2025
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$

Current R&R

Resources

Category	Tonnes (Mt)	Au		Cu		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Measured	11.56 Mt	0.25 g/t	0.09 Moz	0.48%	0.06 Mt Cu	31 Dec 2025	Salobo - Summary of Copper Mineral Resources as of December 31Unverified Evidence record Salobo Measured · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 11555555.555555556 Grade 0.4800 Contained (t Cu) 55466.66666666667 Classification Resource Source trail 20-F: 20-F Salobo - Summary of Copper Mineral Resources as of December 31 Published 2026-03-27 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Category	Tonnes (Mt)	Au		Cu		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Proved	349.67 Mt	0.34 g/t	3.82 Moz	0.59%	2.06 Mt Cu	31 Dec 2025	Salobo - Summary of Copper Mineral Reserves as of December 31Unverified Evidence record Salobo Proved · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 349666666.6666667 Grade 0.5900 Contained (t Cu) 2063033.3333333335 Classification Reserve Source trail 20-F: 20-F Salobo - Summary of Copper Mineral Reserves as of December 31 Published 2026-03-27 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: 20-F: 20-F · published 27 Mar 2026 Ref: Salobo - Summary of Copper Mineral Reserves as of December 31 SK-1300 — Reporting code of record: SK-1300 Cutoff 0.25 % Cu — Cut-off grade assumption from the source statement. @ US$ 9,950/t — Metal price assumption used to derive this estimate. attrib — Figures are net to the issuer's ownership interest as reported (attributable basis) — NOT 100% of the project. QA notes: AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved.
Probable	674.00 Mt	0.34 g/t	7.37 Moz	0.60%	4.04 Mt Cu	31 Dec 2025	Salobo - Summary of Copper Mineral Reserves as of December 31Unverified Evidence record Salobo Probable · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 674000000 Grade 0.6000 Contained (t Cu) 4044000 Classification Reserve Source trail 20-F: 20-F Salobo - Summary of Copper Mineral Reserves as of December 31 Published 2026-03-27 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: 20-F: 20-F · published 27 Mar 2026
Total Reserves	1,023.56 Mt	0.34 g/t	11.19 Moz	0.60%	6.14 Mt Cu	31 Dec 2025	Salobo - Summary of Copper Mineral Reserves as of December 31Unverified Evidence record Salobo Total Reserve · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 1023555555.5555556 Grade 0.6000 Contained (t Cu) 6141333.333333334 Classification Reserve Source trail 20-F: 20-F Salobo - Summary of Copper Mineral Reserves as of December 31 Published 2026-03-27 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: 20-F: 20-F