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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).

KSM

British Columbia, Canada · Developing · 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	1,704.50 Mt	0.66 g/t	36.22 Moz	31 Mar 2022
Indicated	3,714.50 Mt	0.44 g/t	52.40 Moz	10 Jan 2024
Inferred	6,685.50 Mt	0.33 g/t	71.45 Moz	10 Jan 2024
Total Resources	9,812.50 Mt	0.36 g/t	112.77 Moz	10 Jan 2024
Proved	1,297.00 Mt	0.71 g/t	29.60 Moz	26 May 2022
Probable	995.00 Mt	0.55 g/t	17.70 Moz	26 May 2022
Total Reserves	2,292.00 Mt	0.64 g/t	47.30 Moz	26 May 2022

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	1,704.50 Mt	2.41 g/t	132.06 Moz	31 Mar 2022
Indicated	3,714.50 Mt	2.38 g/t	285.21 Moz	10 Jan 2024
Inferred	6,685.50 Mt	2.14 g/t	461.26 Moz	10 Jan 2024
Total Resources	9,812.50 Mt	2.28 g/t	718.54 Moz	10 Jan 2024
Proved

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	1,704.50 Mt	0.14%	2.44 Mt Cu	31 Mar 2022
Indicated	3,714.50 Mt	0.17%	6.46 Mt Cu	10 Jan 2024
Inferred	6,685.50 Mt	0.26%	17.45 Mt Cu	10 Jan 2024
Total Resources	9,812.50 Mt	0.23%	23.04 Mt Cu	10 Jan 2024
Proved

Mo

Category	Tonnes (Mt)	Grade (% Mo)	Contained (Mt Mo)	As at
Measured	1,704.50 Mt	0.01%	0.13 Mt Mo	31 Mar 2022
Indicated	3,714.50 Mt	0.01%	0.21 Mt Mo	10 Jan 2024
Inferred	6,685.50 Mt	0.00%	0.21 Mt Mo	10 Jan 2024
Total Resources	9,812.50 Mt	0.00%	0.37 Mt Mo	10 Jan 2024
Proved

Cut-off grade

10.7500 g/t Au · 10.7500 % Cu · 11.2500 % Cu · 10.7500 g/t Ag · 10.7500 % Mo · 11.2500 g/t Ag · 11.2500 % Mo · 11.2500 g/t Au · 18.0000 g/t Au · 9.0000 % Mo · 9.0000 g/t Ag · 9.0000 % Cu · 9.0000 g/t Au · 16.5000 % Mo · 16.5000 g/t Ag · 16.5000 % Cu · 16.5000 g/t Au · 18.0000 % Mo · 18.0000 g/t Ag · 18.0000 % Cu · 11.0000 % Cu · 11.0000 % Mo · 11.0000 g/t Ag · 11.0000 g/t Au

Price assumption

US$1300.00/oz

JORC code year

—

Peer benchmark — developing Au projects (284 with resources)Resource size P100Resource grade P25View 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: 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) · 10 Jan 2024
Reporting code: SK-1300
Convention: inclusive
Currency assumption: US$
Disagreement flags: 24 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Ag		Cu		Mo		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)	Grade (% Mo)	Contained (Mt Mo)	As at	Source	Provenance
Total	Total Resources

Reserves

Area	Category	Tonnes (Mt)	Au		Ag		Cu		Mo		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)	Grade (% Mo)	Contained (Mt Mo)	As at	Source	Provenance
Total	Total Reserves	2,292.00 Mt	0.64 g/t	47.30 Moz	2.18 g/t	160.00 Moz	0.14%	3.32 Mt Cu	0.01%	0.18 Mt Mo	26 May 2022	derived from 5 rows Proved: KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Proved: KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Probable: KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Probable: KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Probable: KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Unverified Evidence record KSM Total Reserve · Cu · as at 2022-05-26 Reported figure Area Whole project Basis 100% Ore tonnes (t) 2292000000 Grade 0.14331588132635253 Contained (t Cu) 3320296.1485 Classification Reserve Source trail 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 · contributes Proved 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 · contributes Proved 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 · contributes Probable 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 · contributes Probable 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 · contributes Probable Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	—
East Mitchell	Proved	814.00 Mt	0.69 g/t	18.10 Moz	1.80 g/t	47.00 Moz	0.11%	0.93 Mt Cu	0.01%	0.07 Mt Mo	26 May 2022	KSM Project Proven and Probable Mineral Reserves as of May 26, 2022Unverified Evidence record KSM Proved · Cu · as at 2022-05-26 Reported figure Area East Mitchell Basis 100% Ore tonnes (t) 814000000.0000 Grade 0.1100 Contained (t Cu) 926689.2119 Classification Reserve Source trail 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Published 2026-03-27 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 3.38% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±4.61% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)
East Mitchell	Probable	392.00 Mt	0.46 g/t	5.80 Moz	1.70 g/t	21.00 Moz	0.09%	0.36 Mt Cu	0.01%	0.03 Mt Mo	26 May 2022	KSM Project Proven and Probable Mineral Reserves as of May 26, 2022Unverified Evidence record KSM Probable · Mo · as at 2022-05-26 Reported figure Area East Mitchell Basis 100% Ore tonnes (t) 392000000.0000 Grade 0.0084 Contained (t Mo) 33112.2430 Classification Reserve Source trail 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Published 2026-03-27 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Mitchell	Proved	483.00 Mt	0.74 g/t	11.50 Moz	3.30 g/t	51.00 Moz	0.20%	0.98 Mt Cu	0.00%	0.02 Mt Mo	26 May 2022	KSM Project Proven and Probable Mineral Reserves as of May 26, 2022Unverified Evidence record KSM Proved · Cu · as at 2022-05-26 Reported figure Area Mitchell Basis 100% Ore tonnes (t) 483000000.0000 Grade 0.2000 Contained (t Cu) 980213.1116 Classification Reserve Source trail 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Published 2026-03-27 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.45% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.60% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)
Mitchell	Probable	452.00 Mt	0.59 g/t	8.60 Moz	2.50 g/t	36.00 Moz	0.15%	0.66 Mt Cu	0.01%	0.03 Mt Mo	26 May 2022	KSM Project Proven and Probable Mineral Reserves as of May 26, 2022Unverified Evidence record KSM Probable · Mo · as at 2022-05-26 Reported figure Area Mitchell Basis 100% Ore tonnes (t) 452000000.0000 Grade 0.0074 Contained (t Mo) 33565.8354 Classification Reserve Source trail 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Published 2026-03-27 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Sulphurets	Probable	151.00 Mt	0.68 g/t	3.30 Moz	1.00 g/t	5.00 Moz	0.26%	0.40 Mt Cu	0.01%	0.01 Mt Mo	26 May 2022	KSM Project Proven and Probable Mineral Reserves as of May 26, 2022Unverified Evidence record KSM Probable · Mo · as at 2022-05-26 Reported figure Area Sulphurets Basis 100% Ore tonnes (t) 151000000.0000 Grade 0.0070 Contained (t Mo) 10432.6245 Classification Reserve Source trail 40-F: ANNUAL REPORT — ea028273101ex99-1.htm (AIF (index-page), backfilled exhibit) KSM Project Proven and Probable Mineral Reserves as of May 26, 2022 Published 2026-03-27 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.32% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.33% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)