View settings100% · M+I+I · Resources excl. reserves · Native commodities

Reporting assumptions

These choices persist and are added to shared URLs.

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).

Mount Milligan

British Columbia, Canada · 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	360.45 Mt	0.27 g/t	3.12 Moz	31 Dec 2025
Indicated	354.55 Mt	0.28 g/t	3.15 Moz	31 Dec 2025
Inferred	27.90 Mt	0.37 g/t	0.33 Moz	31 Dec 2025
Total Resources	272.56 Mt	0.26 g/t	2.30 Moz	31 Dec 2025
Proved	179.92 Mt	0.31 g/t	1.77 Moz	31 Dec 2025
Probable	290.41 Mt	0.27 g/t	2.52 Moz	31 Dec 2025
Total Reserves	470.33 Mt	0.28 g/t	4.29 Moz	31 Dec 2025

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.

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	360.45 Mt	0.17%	0.61 Mt Cu	31 Dec 2025
Indicated	354.55 Mt	0.14%	0.48 Mt Cu	31 Dec 2025
Inferred	27.90 Mt	0.08%	0.02 Mt Cu	31 Dec 2025
Total Resources	272.56 Mt	0.12%	0.34 Mt Cu	31 Dec 2025
Proved

Cut-off grade

8.4500 g/t Au · 8.4500 % Cu

Price assumption

US$2400.00/oz · US$1800.00/oz

JORC code year

—

Peer benchmark — producing Au projects (282 with resources)Resource size P56Resource grade P10View 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: Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% · 31 Dec 2025
Reporting code: unknown
Convention: inclusive
Currency assumption: US$
Disagreement flags: 8 rows

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	360.45 Mt	0.27 g/t	3.12 Moz	0.17%	0.61 Mt Cu	31 Dec 2025	Centerra Gold 2025 Year-End Mineral Resource SummaryUnverified Evidence record Mount Milligan Measured · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 360446000.0000 Grade 0.2700 Contained (oz) 3116000.0000 Classification Resource Source trail Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% Centerra Gold 2025 Year-End Mineral Resource Summary Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA WARN: document contains mine-plan/LOM-inventory table vocabulary ('mining inventory') — such tables print production-target inventory, NOT a Mineral Resource estimate, and their rows look clean at store time (t23 TGM class). Map each row to its source table before approval and reject rows sourced from the mine-plan/inventory table. Copies a pre-filled issue record so you can send it through your normal channel.

Indicated

354.55 Mt

0.28 g/t

3.15 Moz

0.14%

0.48 Mt Cu

31 Dec 2025

Centerra Gold 2025 Year-End Mineral Resource SummaryUnverified

notes (5)

Source: Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% · published 19 Feb 2026

Ref: Centerra Gold 2025 Year-End Mineral Resource Summary

Unknown code — Reporting code not yet captured for this row.
Cutoff 8.45 g/t Au — Cut-off grade assumption from the source statement.
@ US$ 2,400/oz — Metal price assumption used to derive this estimate.
inc — Stated Resources are inclusive of Reserves. Set Resources: Excl. Reserves to net them out.

QA notes:

QA WARN: document contains mine-plan/LOM-inventory table vocabulary ('mining inventory') — such tables print production-target inventory, NOT a Mineral Resource estimate, and their rows look clean at store time (t23 TGM class). Map each row to its source table before approval and reject rows sourced from the mine-plan/inventory table. QA INFO: recompute differs 1.45% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±1.80% (rounding granularity) — treated as reconciled.

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	179.92 Mt	0.31 g/t	1.77 Moz	0.17%	0.30 Mt Cu	31 Dec 2025	Centerra Gold 2025 Year-End Mineral Reserve SummaryUnverified Evidence record Mount Milligan Proved · Cu · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 179919000.0000 Grade 0.1700 Contained (t Cu) 302092.5184 Classification Reserve Source trail Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% Centerra Gold 2025 Year-End Mineral Reserve Summary Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA WARN: document contains mine-plan/LOM-inventory table vocabulary ('mining inventory') — such tables print production-target inventory, NOT a Mineral Resource estimate, and their rows look clean at store time (t23 TGM class). Map each row to its source table before approval and reject rows sourced from the mine-plan/inventory table. QA INFO: recompute differs 1.25% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.94% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% · published 19 Feb 2026 Ref: Centerra Gold 2025 Year-End Mineral Reserve Summary Unknown code — Reporting code not yet captured for this row. Cutoff 8.45 % Cu — Cut-off grade assumption from the source statement. @ US$ 1,800/t — 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. QA WARN: document contains mine-plan/LOM-inventory table vocabulary ('mining inventory') — such tables print production-target inventory, NOT a Mineral Resource estimate, and their rows look clean at store time (t23 TGM class). Map each row to its source table before approval and reject rows sourced from the mine-plan/inventory table. QA INFO: recompute differs 1.25% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.94% (rounding granularity) — treated as reconciled.
Probable	290.41 Mt	0.27 g/t	2.52 Moz	0.16%	0.48 Mt Cu	31 Dec 2025	Centerra Gold 2025 Year-End Mineral Reserve SummaryUnverified Evidence record Mount Milligan Probable · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 290413000.0000 Grade 0.2700 Contained (oz) 2522000.0000 Classification Reserve Source trail Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% Centerra Gold 2025 Year-End Mineral Reserve Summary Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA WARN: document contains mine-plan/LOM-inventory table vocabulary ('mining inventory') — such tables print production-target inventory, NOT a Mineral Resource estimate, and their rows look clean at store time (t23 TGM class). Map each row to its source table before approval and reject rows sourced from the mine-plan/inventory table. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)
Total Reserves	470.33 Mt	0.28 g/t	4.29 Moz	0.17%	0.78 Mt Cu	31 Dec 2025	Centerra Gold 2025 Year-End Mineral Reserve SummaryUnverified Evidence record Mount Milligan Total Reserve · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 470332000.0000 Grade 0.2800 Contained (oz) 4294000.0000 Classification Reserve Source trail Centerra Gold Announces 2025 Year-End Mineral Reserves and Resources and Provides Exploration Update; Gold and Copper Reserves Increased 58% and 49% Centerra Gold 2025 Year-End Mineral Reserve Summary Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA WARN: document contains mine-plan/LOM-inventory table vocabulary ('mining inventory') — such tables print production-target inventory, NOT a Mineral Resource estimate, and their rows look clean at store time (t23 TGM class). Map each row to its source table before approval and reject rows sourced from the mine-plan/inventory table. QA INFO: recompute differs 1.40% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±1.80% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)