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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).

Filo del Sol

San Juan / Atacama, 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	—	—	—	—
Indicated	2,572.00 Mt	0.32 g/t	26.50 Moz	31 Oct 2025
Inferred	9,958.00 Mt	0.18 g/t	58.70 Moz	31 Oct 2025
Total Resources	12,270.36 Mt	0.21 g/t	82.33 Moz	31 Oct 2025
Proved	—	—	—	—
Probable	259.64 Mt	0.34 g/t	2.87 Moz	28 Feb 2023
Total Reserves	259.64 Mt	0.34 g/t	2.87 Moz	28 Feb 2023

Sub-category rows are as disclosed (no Reserves-treatment netting); the Total rows honour the Resources treatment and Inferred-policy toggles, so components may not sum to the Total.

Dotted tonnes/grade are derived under the active Resources treatment: tonnes are netted of (or grossed by) the reserve tonnage alongside contained, and grade is re-derived as netted contained ÷ netted tonnes — not the published figures.

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	—	—	—	—
Indicated	2,572.00 Mt	8.10 g/t	672.00 Moz	31 Oct 2025
Inferred	9,958.00 Mt	3.20 g/t	1,030.00 Moz	31 Oct 2025
Total Resources	12,270.36 Mt	3.98 g/t	1,568.67 Moz	31 Oct 2025
Proved

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	—	—	—	—
Indicated	2,572.00 Mt	0.38%	9.76 Mt Cu	31 Oct 2025
Inferred	9,958.00 Mt	0.31%	30.74 Mt Cu	31 Oct 2025
Total Resources	12,270.36 Mt	0.32%	39.49 Mt Cu	31 Oct 2025
Proved

Cut-off grade

4.5000 g/t Au · 4.5000 g/t Ag · 4.5000 % Cu

Price assumption

US$3.50/t

JORC code year

—

Peer benchmark — developing Cu projects (124 with resources)Resource size P99Resource grade P42View 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: Lundin Mining Increases M&I Copper Mineral Resources by 37% and Updates Mineral Reserves · 31 Oct 2025
Reporting code: unknown
Convention: inclusive
Currency assumption: US$
Disagreement flags: 13 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Ag		Cu		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Total	Indicated	2,572.00 Mt	0.32 g/t	26.50 Moz	8.10 g/t	672.00 Moz	0.38%

Oxide

Indicated

362.20 Mt

0.33 g/t

3.84 Moz

13.30 g/t

154.67 Moz

0.34%

1.22 Mt Cu

18 Jan 2023

Mineral Resource Estimates – December 31st, 2024 (second table) – Filo OxideUnverified

notes (4)

Source: Lundin Mining Announces 2024 Mineral Resource and Mineral Reserve Estimates · published 12 Feb 2025

Ref: Mineral Resource Estimates – December 31st, 2024 (second table) – Filo Oxide

Unknown code — Reporting code not yet captured for this row.
inc — Stated Resources are inclusive of Reserves. Set Resources: Excl. Reserves to net them out.

QA notes:

QA INFO: recompute differs 1.19% from the printed contained figure, but the printed tonnes/grade/contained carry ±1.53% rounding granularity (capped per component; the true half-step band of coarse prints is wider) and the remainder sits under the warn threshold — treated as reconciled.
QA fix: 'Filo Oxide' Indicated prints 362,200 kt @0.34% = 1,217 kt Cu - figures correct, but the notes state 'The Filo del Sol Mineral Resource estimates are effective as at January 18, 2023'; stamping it 2024-12-31 files a 2023 estimate as the current statement.

Reserves

Area	Category	Tonnes (Mt)	Au		Ag		Cu		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Total	Total Reserves	259.64 Mt	0.34 g/t	2.87 Moz	16.00 g/t	133.33 Moz	0.39%	1.01 Mt Cu	28 Feb 2023	Mineral Reserves Estimates - December 31st, 2024Unverified Evidence record Filo del Sol Total Reserve · Cu · as at 2023-02-28 Reported figure Area Whole project Basis 100% Ore tonnes (t) 259640000.0000 Grade 0.3900 Contained (t Cu) 1007000.0000 Classification Reserve Source trail Lundin Mining Announces 2024 Mineral Resource and Mineral Reserve Estimates Mineral Reserves Estimates - December 31st, 2024 Published 2025-02-12 Verification Approved; not independently verified · Model extracted QA WARN: cross-category subtotal — this total_reserve row on area 'Oxide' equals the sum of the same area's probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). Policy keeps category leaves + the whole-project Total; adjudicate per the per-property-totals precedent before approval. \| QA fix: 'Filo del Sol Oxide / Total' prints 259,640 kt @0.39% = 1,007 kt Cu - the only reserve block for the project (Proven prints '-'), i.e. a full-cover scope-labelled whole-project total with no area-NULL twin; clear the area so the rollup reads it as the project total. Copies a pre-filled issue record so you can send it through your normal channel.	notes (3) Source: Lundin Mining Announces 2024 Mineral Resource and Mineral Reserve Estimates · published 12 Feb 2025 Ref: Mineral Reserves Estimates - December 31st, 2024 Unknown code — Reporting code not yet captured for this row. QA notes: QA WARN: cross-category subtotal — this total_reserve row on area 'Oxide' equals the sum of the same area's probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). Policy keeps category leaves + the whole-project Total; adjudicate per the per-property-totals precedent before approval. QA fix: 'Filo del Sol Oxide / Total' prints 259,640 kt @0.39% = 1,007 kt Cu - the only reserve block for the project (Proven prints '-'), i.e. a full-cover scope-labelled whole-project total with no area-NULL twin; clear the area so the rollup reads it as the project total.
Oxide	Probable	259.64 Mt	0.34 g/t	2.87 Moz	16.00 g/t	133.33 Moz	0.39%	1.01 Mt Cu	28 Feb 2023	Mineral Reserves Estimates - December 31st, 2024Unverified Evidence record Filo del Sol Probable · Au · as at 2023-02-28 Reported figure Area Oxide Basis 100% Ore tonnes (t) 259640000.0000 Grade 0.3400 Contained (oz) 2867000.0000 Classification Reserve Source trail Lundin Mining Announces 2024 Mineral Resource and Mineral Reserve Estimates Mineral Reserves Estimates - December 31st, 2024 Published 2025-02-12 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.00% from the printed contained figure, but the printed tonnes/grade/contained carry ±1.49% rounding granularity (capped per component; the true half-step band of coarse prints is wider) and the remainder sits under the warn threshold — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)