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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).

Guanajuato Centro

Manual entry

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	2.93 Mt	0.55 g/t	0.06 Moz	31 Dec 2025
Indicated	11.57 Mt	1.58 g/t	0.59 Moz	31 Dec 2025
Inferred	16.45 Mt	1.50 g/t	0.79 Moz	31 Dec 2025
Total Resources	30.95 Mt	1.44 g/t	1.43 Moz	31 Dec 2025
Proved	—	—	—	—
Probable	—	—	—	—
Total Reserves	—	—	—	—

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	2.93 Mt	42.00 g/t	4.79 Moz	31 Dec 2025
Indicated	11.57 Mt	61.00 g/t	22.72 Moz	31 Dec 2025
Inferred	16.45 Mt	58.00 g/t	30.82 Moz	31 Dec 2025
Total Resources	30.95 Mt	57.61 g/t	58.32 Moz	31 Dec 2025
Proved	—	—	—	—
Probable

Cut-off grade

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Price assumption

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JORC code year

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Peer benchmark — Au projects (all stages) (904 with resources)Resource size P61Resource grade P59View 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: Fresnillo plc - Annual Report and Accounts 2025, incl. Mineral Resources and Ore Reserves tables as at 31 Dec 2025 · 31 Dec 2025
Reporting code: unknown
Convention: unknown
Currency assumption: GBP
Disagreement flags: 2 rows

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	2.93 Mt	0.55 g/t	0.06 Moz	42.00 g/t	4.79 Moz	31 Dec 2025	p.287 - Consolidated audited mineral resource statement of exploration projects and prospectsManual entry Evidence record Guanajuato Centro Measured · Ag · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 2927000.0000 Grade 42.0000 Contained (oz) 4786000.0000 Classification Resource Source trail Fresnillo plc - Annual Report and Accounts 2025, incl. Mineral Resources and Ore Reserves tables as at 31 Dec 2025 p.287 - Consolidated audited mineral resource statement of exploration projects and prospects Published 2026-04-17 Verification Approved; not independently verified · Manual entry t87f spec capture, print-verified — Exploration projects and prospects mineral resource statement, p.287 - Consolidated audited mineral resource statement of exploration projects and prospects; printed 2,927 kt @ 42 = 4,786 koz \| PRINT DEFECT, transcription confirmed: the printed Ag cells do not reconcile with each other even at full rounding tolerance - 2,927 kt x 42 recomputes to 3,952,417, band [3,904,697, 4,000,153], against a printed 4,786 koz. All three cells are transcribed exactly as printed and the printed contained is canonical per house rule; the statement's own printed block total confirms the contained figure. \| quote: Guanajuato Centro – veins US$63.67/t 2,927 0.55 42 — — 57 4,786 — — \| QA annotate (t98v, a2.txt): \| Row stands on the print; the ISSUER's own Guanajuato Centro MEASURED line does not reconcile and no cell of it is mis-captured. Printed: "Guanajuato Centro – veins US$63.67/t 2,927 0.55 42 — — 57 4,786 — —" — 2,927 kt / Au 0.55 g/t / Ag 42 g/t / 57 koz Au / 4,786 koz Ag. Stored tonnes, grade and contained all match that line exactly. Disagreeing cells: 2,927 kt at the printed 42 g/t Ag yields 3,954 koz, not the printed 4,786 koz; the metal-implied grade is 50.86 g/t, 19.6% above even the top of the integer band [41.5,42.5], so print granularity cannot absorb it. Diagnostic that this is the issuer's slip and not ours: EVERY other Guanajuato Centro line in the same table reconciles to under 0.5% — Indicated "11,571 1.58 61 — — 586 22,715" (implied 61.06 vs printed 61) and Inferred "16,454 1.50 58 — — 791 30,823" (implied 58.27 vs printed 58) — as does Manzanillas Measured "107 4.45 86 — — 15 295" (implied 85.75). Only the Measured line of this one deposit breaks. Not FIXed: the print gives no second value to fix to (back-solving tonnage from Au gives 3,224 kt, from Ag 3,545 kt — mutually inconsistent), so any repair would be a recompute. \| t98v Copies a pre-filled issue record so you can send it through your normal channel.

notes (7)

Source: Fresnillo plc - Annual Report and Accounts 2025, incl. Mineral Resources and Ore Reserves tables as at 31 Dec 2025 · published 17 Apr 2026

Ref: p.287 - Consolidated audited mineral resource statement of exploration projects and prospects

Unknown code — Reporting code not yet captured for this row.

QA notes:

t87f spec capture, print-verified — Exploration projects and prospects mineral resource statement, p.287 - Consolidated audited mineral resource statement of exploration projects and prospects; printed 2,927 kt @ 42 = 4,786 koz
PRINT DEFECT, transcription confirmed: the printed Ag cells do not reconcile with each other even at full rounding tolerance - 2,927 kt x 42 recomputes to 3,952,417, band [3,904,697, 4,000,153], against a printed 4,786 koz. All three cells are transcribed exactly as printed and the printed contained is canonical per house rule; the statement's own printed block total confirms the contained figure.
quote: Guanajuato Centro – veins US$63.67/t 2,927 0.55 42 — — 57 4,786 — —
QA annotate (t98v, a2.txt):
Row stands on the print; the ISSUER's own Guanajuato Centro MEASURED line does not reconcile and no cell of it is mis-captured. Printed: "Guanajuato Centro – veins US$63.67/t 2,927 0.55 42 — — 57 4,786 — —" — 2,927 kt / Au 0.55 g/t / Ag 42 g/t / 57 koz Au / 4,786 koz Ag. Stored tonnes, grade and contained all match that line exactly. Disagreeing cells: 2,927 kt at the printed 42 g/t Ag yields 3,954 koz, not the printed 4,786 koz; the metal-implied grade is 50.86 g/t, 19.6% above even the top of the integer band [41.5,42.5], so print granularity cannot absorb it. Diagnostic that this is the issuer's slip and not ours: EVERY other Guanajuato Centro line in the same table reconciles to under 0.5% — Indicated "11,571 1.58 61 — — 586 22,715" (implied 61.06 vs printed 61) and Inferred "16,454 1.50 58 — — 791 30,823" (implied 58.27 vs printed 58) — as does Manzanillas Measured "107 4.45 86 — — 15 295" (implied 85.75). Only the Measured line of this one deposit breaks. Not FIXed: the print gives no second value to fix to (back-solving tonnage from Au gives 3,224 kt, from Ag 3,545 kt — mutually inconsistent), so any repair would be a recompute.
t98v