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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).

Orcopampa

Peru · Producing · 100.0% 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	0.01 Mt	7.55 g/t	2.56 koz	31 Dec 2023
Indicated	0.31 Mt	5.44 g/t	0.05 Moz	31 Dec 2023
Inferred	0.84 Mt	7.08 g/t	0.19 Moz	31 Dec 2023
Total Resources	1.17 Mt	6.64 g/t	0.25 Moz	31 Dec 2023
Proved	0.01 Mt	10.33 g/t	2.35 koz	31 Dec 2023
Probable	0.22 Mt	9.73 g/t	0.07 Moz	31 Dec 2023
Total Reserves	0.22 Mt	9.75 g/t	0.07 Moz	31 Dec 2023

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	0.01 Mt	8.11 g/t	2.75 koz	31 Dec 2023
Indicated	0.31 Mt	17.14 g/t	0.17 Moz	31 Dec 2023
Inferred	0.84 Mt	23.43 g/t	0.64 Moz	31 Dec 2023
Total Resources	1.17 Mt	21.60 g/t	0.81 Moz	31 Dec 2023
Proved	0.01 Mt	5.20 g/t	1.18 koz	31 Dec 2023
Probable

Cut-off grade

144.3500 g/t Ag · 144.3500 g/t Au

Price assumption

US$1750.00/oz

JORC code year

—

Peer benchmark — producing Au projects (282 with resources)Resource size P16Resource grade P92View 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/A: 20-F/A · 31 Dec 2023
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Measured	0.01 Mt	7.55 g/t	2.56 koz	8.11 g/t	2.75 koz	31 Dec 2023	Orcopampa – Year End Mineral Resources as of December 31, 2023 (on an 100% ownership basis)Unverified Evidence record Orcopampa Measured · Ag · as at 2023-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 10536.0000 Grade 8.1100 Contained (oz) 2747.0000 Classification Resource Source trail 20-F/A: 20-F/A Orcopampa – Year End Mineral Resources as of December 31, 2023 (on an 100% ownership basis) Published 2025-01-14 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Proved	0.01 Mt	10.33 g/t	2.35 koz	5.20 g/t	1.18 koz	31 Dec 2023	Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis)Unverified Evidence record Orcopampa Proved · Ag · as at 2023-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 7059.0000 Grade 5.2000 Contained (oz) 1179.0000 Classification Reserve Source trail 20-F/A: 20-F/A Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis) Published 2025-01-14 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F/A: 20-F/A · published 14 Jan 2025 Ref: Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis) SK-1300 — Reporting code of record: SK-1300 Cutoff 144.35 g/t Ag — Cut-off grade assumption from the source statement. @ US$ 1,750/oz — Metal price assumption used to derive this estimate. QA notes: QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none.
Probable	0.22 Mt	9.73 g/t	0.07 Moz	4.99 g/t	0.03 Moz	31 Dec 2023	Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis)Unverified Evidence record Orcopampa Probable · Au · as at 2023-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 215277.0000 Grade 9.7300 Contained (oz) 67375.0000 Classification Reserve Source trail 20-F/A: 20-F/A Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis) Published 2025-01-14 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F/A: 20-F/A · published 14 Jan 2025
Total Reserves	0.22 Mt	9.75 g/t	0.07 Moz	5.00 g/t	0.04 Moz	31 Dec 2023	Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis)Unverified Evidence record Orcopampa Total Reserve · Au · as at 2023-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 222336.0000 Grade 9.7500 Contained (oz) 69721.0000 Classification Reserve Source trail 20-F/A: 20-F/A Orcopampa – Year End Mineral Reserves as of December 31, 2023 (on a 100% ownership basis) Published 2025-01-14 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F/A: 20-F/A