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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).

NuevaUnión

Chile · Developing · 50.0% 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	9.60 Mt	0.47 g/t	0.20 Moz	31 Dec 2025
Indicated	236.60 Mt	0.59 g/t	4.60 Moz	31 Dec 2025
Inferred	479.60 Mt	0.40 g/t	6.20 Moz	31 Dec 2025
Total Resources	725.80 Mt	0.46 g/t	11.00 Moz	31 Dec 2025
Proved	—	—	—	—
Probable	682.20 Mt	0.47 g/t	10.20 Moz	31 Dec 2025
Total Reserves	682.20 Mt	0.47 g/t	10.20 Moz	31 Dec 2024

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	164.30 Mt	0.96 g/t	5.10 Moz	31 Dec 2025
Indicated	349.90 Mt	1.19 g/t	13.40 Moz	31 Dec 2025
Inferred	602.20 Mt	1.20 g/t	22.50 Moz	31 Dec 2025
Total Resources	1,116.40 Mt	1.16 g/t	41.00 Moz	31 Dec 2025
Proved	—	—	—	—
Probable

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	328.60 Mt	0.19%	0.60 Mt Cu	31 Dec 2025
Indicated	699.80 Mt	0.34%	2.40 Mt Cu	31 Dec 2025
Inferred	1,204.40 Mt	0.40%	4.60 Mt Cu	31 Dec 2025
Total Resources	2,232.80 Mt	0.35%	7.60 Mt Cu	31 Dec 2025
Proved	—	—	—	—
Probable

Mo

Category	Tonnes (Mt)	Grade (% Mo)	Contained (Mt Mo)	As at
Measured	159.50 Mt	0.01%	0.02 Mt Mo	31 Dec 2025
Indicated	231.50 Mt	0.01%	0.02 Mt Mo	31 Dec 2025
Inferred	362.30 Mt	0.00%	0.00 Mt Mo	31 Dec 2024
Total Resources	782.00 Mt	0.01%	0.08 Mt Mo	31 Dec 2024
Proved	—	—	—	—
Probable

Cut-off grade

—

Price assumption

US$10.00/t · US$18.00/t · US$1300.00/t · US$3.00/t · US$1700.00/t

JORC code year

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Peer benchmark — developing Cu projects (124 with resources)Resource size P91Resource grade P46View 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: 10-K: 10-K · 31 Dec 2025
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$
Disagreement flags: 15 rows

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		Cu		Mo		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Mo)	Contained (Mt Mo)	As at	Source	Provenance
Measured	9.60–328.60 Mt	0.47 g/t	0.20 Moz	0.96 g/t

Reserves

Category	Tonnes (Mt)	Au		Ag		Cu		Mo		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Mo)	Contained (Mt Mo)	As at	Source	Provenance
Probable	682.20–2,236.00 Mt	0.47 g/t	10.20 Moz	1.31 g/t	94.40 Moz	0.40%	8.80 Mt Cu	0.02%	0.20 Mt Mo	31 Dec 2025	Molybdenum Reserves at December 31, 2025Unverified Evidence record NuevaUnión Probable · Mo · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 1553800000 Grade 0.0200 Contained (t Mo) 200000 Classification Reserve Source trail 10-K: 10-K Molybdenum Reserves at December 31, 2025 Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 55.38% from the printed contained figure, but the print is exactly consistent with the recompute at the printed tonnes/grade/contained granularity (rounding-interval overlap) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K · published 19 Feb 2026 Ref: Molybdenum Reserves at December 31, 2025 SK-1300 — Reporting code of record: SK-1300 @ US$ 10/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: QA INFO: recompute differs 55.38% from the printed contained figure, but the print is exactly consistent with the recompute at the printed tonnes/grade/contained granularity (rounding-interval overlap) — treated as reconciled.
Total Reserves	682.20–2,236.00 Mt	0.47 g/t	10.20 Moz	1.31 g/t	94.40 Moz	0.40%	8.80 Mt Cu	0.02%	0.20 Mt Mo	31 Dec 2024	Copper Reserves at December 31, 2024Unverified Evidence record NuevaUnión Total Reserve · Cu · as at 2024-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 2236000000 Grade 0.4000 Contained (t Cu) 8800000 Classification Reserve Source trail 10-K: 10-K Copper Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.64% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.43% (rounding granularity) — treated as reconciled. \| tranche12 QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.