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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).

Santo Domingo

Atacama, Chile · Developing · 100.0% ownedManual 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	134.00 Mt	0.07 g/t	0.29 Moz	31 Mar 2024
Indicated	413.00 Mt	0.04 g/t	0.45 Moz	31 Mar 2024
Inferred	230.00 Mt	0.03 g/t	0.20 Moz	31 Mar 2024
Total Resources	777.00 Mt	0.04 g/t	0.94 Moz	31 Mar 2024
Proved	130.90 Mt	0.07 g/t	0.29 Moz	31 Mar 2024
Probable	305.10 Mt	0.04 g/t	0.35 Moz	31 Mar 2024
Total Reserves	436.10 Mt	0.05 g/t	0.64 Moz	31 Mar 2024

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	134.00 Mt	0.51%	0.68 Mt Cu	31 Mar 2024
Indicated	413.00 Mt	0.24%	1.03 Mt Cu	31 Mar 2024
Inferred	230.00 Mt	0.21%	0.48 Mt Cu	31 Mar 2024
Total Resources	777.00 Mt	0.28%	2.18 Mt Cu	31 Mar 2024
Proved	130.90 Mt	0.52%	0.68 Mt Cu	31 Mar 2024
Probable

Fe

Category	Tonnes (Mt)	Grade (% Fe)	Contained (Mt Fe)	As at
Measured	134.00 Mt	26.90%	36.00 Mt Fe	31 Mar 2024
Indicated	372.00 Mt	25.36%	95.00 Mt Fe	31 Mar 2024
Inferred	203.00 Mt	22.45%	45.00 Mt Fe	31 Mar 2024
Total Resources	709.00 Mt	24.82%	176.00 Mt Fe	31 Mar 2024
Proved	130.90 Mt	27.20%	35.60 Mt Fe	31 Mar 2024
Probable

Cut-off grade

9.8500 % Cu · 9.8500 g/t Au · 9.8500 % Fe · 9.6300 g/t Au · 9.6300 % Cu · 0.8400 % Cu · 0.8400 % Fe · 0.8400 g/t Au

Price assumption

A$4.10/t · A$3.75/t

JORC code year

—

Peer benchmark — developing Fe projects (8 with resources)Resource size P69Resource grade P31View 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: Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) · 31 Mar 2024
Reporting code: unknown
Convention: unknown
Currency assumption: A$
Disagreement flags: 24 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Cu		Fe		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Fe)	Contained (Mt Fe)	As at	Source	Provenance
Total	Measured	134.00 Mt	0.07 g/t	0.29 Moz	0.51%	0.68 Mt Cu	26.90%

Santo Domingo

Indicated

298.00 Mt

0.04 g/t

0.36 Moz

0.26%

0.79 Mt Cu

25.70%

77.00 Mt Fe

31 Mar 2024

70Unverified

notes (6)

Source: Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) · published 23 Mar 2026

Ref: 70

Unknown code — Reporting code not yet captured for this row.
Cutoff 9.85 % Cu — Cut-off grade assumption from the source statement.
@ A$ 4.1/t — Metal price assumption used to derive this estimate.

QA notes:

QA INFO: recompute differs 1.42% from the printed contained figure, but the printed tonnes/grade/contained carry ±2.15% 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.
t92a relabel (t91 p4 Table 21 finding, retry of t91a E1): the area='' row is the printed Santo-Domingo-only stage line (printed Totals are 413 Mt indicated / 230 Mt inferred incl. Iris Norte + Estrellita); label aligned with the fixed reserve rows
t92a swarm-r3

Santo Domingo

Inferred

173.00 Mt

0.03 g/t

0.16 Moz

0.20%

0.35 Mt Cu

22.20%

38.00 Mt Fe

31 Mar 2024

70Unverified

notes (6)

Source: Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) · published 23 Mar 2026

Ref: 70

Unknown code — Reporting code not yet captured for this row.
Cutoff 9.85 % Fe — Cut-off grade assumption from the source statement.
@ A$ 4.1/t — Metal price assumption used to derive this estimate.

QA notes:

QA INFO: recompute differs 1.07% from the printed contained figure, but the printed tonnes/grade/contained carry ±1.83% 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.
t92a relabel (t91 p4 Table 21 finding, retry of t91a E1): the area='' row is the printed Santo-Domingo-only stage line (printed Totals are 413 Mt indicated / 230 Mt inferred incl. Iris Norte + Estrellita); label aligned with the fixed reserve rows
t92a swarm-r3

Reserves

Area	Category	Tonnes (Mt)	Au		Cu		Fe		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Fe)	Contained (Mt Fe)	As at	Source	Provenance
Total	Proved	130.90 Mt	0.07 g/t	0.29 Moz	0.52%	0.68 Mt Cu	27.20%	35.60 Mt Fe	31 Mar 2024	71Unverified Evidence record Santo Domingo Proved · Cu · as at 2024-03-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 130900000.0000 Grade 0.5200 Contained (t Cu) 675000.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) 71 Published 2026-03-23 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA fix: Proven Santo Domingo 130.9 Mt at 0.52% Cu, 675 kt (line 3389) matches the print. Table 22 is titled 'Santo Domingo Estimated Mineral Reserves as at March 31, 2024' (line 3385) and lines 3365-3366 state 'The effective date of the Mineral Reserve estimate is March 31, 2024'; the doc carries no 2025 restatement of the SD reserve, so the stored 2025-12 Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) · published 23 Mar 2026 Ref: 71 Unknown code — Reporting code not yet captured for this row. Cutoff 0.84 % Cu — Cut-off grade assumption from the source statement. @ A$ 3.75/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 fix: Proven Santo Domingo 130.9 Mt at 0.52% Cu, 675 kt (line 3389) matches the print. Table 22 is titled 'Santo Domingo Estimated Mineral Reserves as at March 31, 2024' (line 3385) and lines 3365-3366 state 'The effective date of the Mineral Reserve estimate is March 31, 2024'; the doc carries no 2025 restatement of the SD reserve, so the stored 2025-12
Total	Probable	305.10 Mt	0.04 g/t	0.35 Moz	0.25%	0.76 Mt Cu	26.20%	79.94 Mt Fe	31 Mar 2024	Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025)Manual entry Evidence record Santo Domingo Probable · Fe · as at 2024-03-31 Reported figure Area Whole project Basis Not stated Ore tonnes (t) 305100000.0000 Grade 26.2000 Contained (t Fe) 79936200.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) Page reference not recorded Published 2026-03-23 Verification Approved; not independently verified · Manual entry t94 print-verified capture: "Total Probable Mineral Reserves 305.1 0.25 0.04 26.2 346 761 55.8" - Fe contained derived t x Fe%, rep=NULL (ops/t94_verified.md §A) \| t94a capture Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Total	Total Reserves	436.10 Mt	0.05 g/t	0.64 Moz	0.33%	1.44 Mt Cu	26.50%	115.57 Mt Fe	31 Mar 2024	71Unverified Evidence record Santo Domingo Total Reserve · Fe · as at 2024-03-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 436100000.0000 Grade 26.5000 Contained (t Fe) 115566500.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) 71 Published 2026-03-23 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 prints recovered-metal vocabulary ('Ounces Recovered') — if the reserve table's metal column is 'Ounces Recovered' the stored contained figure is post-recovery, not an in-situ contained metal (t24 AGLD class; recoverable-basis machinery not built). Verify the column heading; reject recovered-basis rows. QA WARN: 2 rows share this exact identity in this document with CONFLICTING figures (sibling copies: t=382100000.0 conf=0.92) — at most one matches the print; the others are likely fabricated duplicates (verify against the printed table and reject the copies that do not appear). QA BLOCK: conflicting duplicate — this (project, mining area, commodity, classification, category, as-at date) appears 2 times in the document WITH DIFFERENT figures. At most one copy matches the print; verify each against the document and reject the rest (a copy whose figures appear nowhere in the text is fabricated). \| QA fix: Line 3400 'Total Mineral Reserves' 436.1 Mt at 26.5% Fe, printed whole-project P+P total, no printed contained-Fe column so the recompute with reported NULL is correct. Table 22 is titled 'Santo Domingo Estimated Mineral Reserves as at March 31, 2024' (line 3385) and lines 3365-3366 state 'The effective date of the Mineral Reserve estimate is March Copies a pre-filled issue record so you can send it through your normal channel.
Iris Norte	Probable	53.90 Mt	0.02 g/t	0.04 Moz	0.16%	0.09 Mt Cu	24.30%	13.10 Mt Fe	31 Mar 2024	71Unverified Evidence record Santo Domingo Probable · Au · as at 2024-03-31 Reported figure Area Iris Norte Basis 100% Ore tonnes (t) 53900000.0000 Grade 0.0200 Contained (oz) 36000.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) 71 Published 2026-03-23 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA INFO: recompute differs 3.73% from the printed contained figure, but the printed tonnes/grade/contained carry ±7.48% 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: Probable Iris Norte 53.9 Mt at 0.02 g/t Au, 36 koz (line 3395) matches the print. Table 22 is titled 'Santo Domingo Estimated Mineral Reserves as at March 31, 2024' (line 3385) and lines 3365-3366 state 'The effective date of the Mineral Reserve estimate is March 31, 2024'; the doc carries no 2025 restatement of the SD reserve, so the stored 2025-1 Copies a pre-filled issue record so you can send it through your normal channel.
Iris Norte	Total Reserves	53.90 Mt	0.02 g/t	0.04 Moz	0.16%	0.09 Mt Cu	24.30%	13.10 Mt Fe	31 Mar 2024	Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025)Manual entry Evidence record Santo Domingo Total Reserve · Au · as at 2024-03-31 Reported figure Area Iris Norte Basis Not stated Ore tonnes (t) 53900000.0000 Grade 0.0200 Contained (oz) 36000.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) Page reference not recorded Published 2026-03-23 Verification Approved; not independently verified · Manual entry t94 print-verified capture: "Iris Norte 53.9 0.16 0.02 24.3 36 88 10.8" (ops/t94_verified.md §A) \| t94a capture Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Santo Domingo	Probable	251.20 Mt	0.04 g/t	0.31 Moz	0.27%	0.67 Mt Cu	26.60%	66.82 Mt Fe	31 Mar 2024	71Unverified Evidence record Santo Domingo Probable · Au · as at 2024-03-31 Reported figure Area Santo Domingo Basis 100% Ore tonnes (t) 251200000.0000 Grade 0.0400 Contained (oz) 309000.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) 71 Published 2026-03-23 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 prints recovered-metal vocabulary ('Ounces Recovered') — if the reserve table's metal column is 'Ounces Recovered' the stored contained figure is post-recovery, not an in-situ contained metal (t24 AGLD class; recoverable-basis machinery not built). Verify the column heading; reject recovered-basis rows. QA WARN: 2 rows share this exact identity in this document with CONFLICTING figures (sibling copies: t=305100000.0 conf=0.92) — at most one matches the print; the others are likely fabricated duplicates (verify against the printed table and reject the copies that do not appear). QA BLOCK: conflicting duplicate — this (project, mining area, commodity, classification, category, as-at date) appears 2 times in the document WITH DIFFERENT figures. At most one copy matches the print; verify each against the document and reject the rest (a copy whose figures appear nowhere in the text is fabricated). QA INFO: recompute differs 4.55% from the printed contained figure, but the printed tonnes/grade/contained carry ±6.18% 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: Probable Santo Domingo 251.2 Mt at 0.04 g/t Au, 309 koz (line 3393) matches this copy; the conflicting 305.1 Mt sibling is the 'Total Probable' rollup and is rejected. Table 22 is titled 'Santo Domingo Estimated Mineral Reserves as at March 31, 2024' (line 3385) and lines 3365-3366 state 'The effective date of the Mineral Reserve estimate is March \| t91a fix (p4): mining_area: '' -> 'Santo Domingo'. Printed Table 22 line 3393-3394: "Probable Mineral Reserves Santo Domingo 251.2 0.27 0.04 26.6 309 673 45.1". The stored 251,200,000 t / 0.04 g/t Au / 309,000 oz is that Santo-Domingo STAGE line, not the whole-project probable — the printed whole-project probable is "Total Probable Mineral Reserves 305.1 0.25 0.04 26.2 346 761 55.8" (line 3396). Its Iris Norte sibling 4e247020 already carries mining_area='Iris Norte' (53.9 Mt / 36 koz, line 3395) and 309 + 36 = 345 koz vs the printed Total Probable 346 koz (one print step), 251.2 + 53.9 = 305.1 Mt EXACTLY, so the pair is a complete leaf set and only the label is wrong. Figures are print-exact and unchanged; recompute 251.2 Mt @ 0.04 g/t = 323,050 oz vs printed 309,000 (4.35%), fully inside the +/-12.5% half-step band of a two-decimal 0.04 g/t print — printed 309 koz canonical. Recovered-metal WARN refuted: Table 22's column head is "Contained Metal" (line 3386); "Total Gold Ounces Recovered koz 411.6" (line 3558) belongs to the LOM production summary (line 3549), not the reserve table. \| t91a print-round Copies a pre-filled issue record so you can send it through your normal channel.
Santo Domingo	Total Reserves	382.10 Mt	0.05 g/t	0.60 Moz	0.35%	1.35 Mt Cu	26.80%	102.40 Mt Fe	31 Mar 2024	Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025)Manual entry Evidence record Santo Domingo Total Reserve · Au · as at 2024-03-31 Reported figure Area Santo Domingo Basis Not stated Ore tonnes (t) 382100000.0000 Grade 0.0500 Contained (oz) 600000.0000 Classification Reserve Source trail Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) Page reference not recorded Published 2026-03-23 Verification Approved; not independently verified · Manual entry t94 print-verified capture: "Total Mineral Reserves Santo (Proven and Probable) Domingo 382.1 0.35 0.05 26.8 600 1,347 57.6" (ops/t94_verified.md §A) \| t94a capture Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)

notes (7)

Source: Capstone Copper Annual Information Form 2025 (Mineral Reserve and Resource estimates as at 31 Dec 2025) · published 23 Mar 2026

Ref: 71

Unknown code — Reporting code not yet captured for this row.
Cutoff 0.84 g/t Au — Cut-off grade assumption from the source statement.
@ A$ 3.75/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. QA WARN: document prints recovered-metal vocabulary ('Ounces Recovered') — if the reserve table's metal column is 'Ounces Recovered' the stored contained figure is post-recovery, not an in-situ contained metal (t24 AGLD class; recoverable-basis machinery not built). Verify the column heading; reject recovered-basis rows. QA WARN: 2 rows share this exact identity in this document with CONFLICTING figures (sibling copies: t=305100000.0 conf=0.92) — at most one matches the print; the others are likely fabricated duplicates (verify against the printed table and reject the copies that do not appear). QA BLOCK: conflicting duplicate — this (project, mining area, commodity, classification, category, as-at date) appears 2 times in the document WITH DIFFERENT figures. At most one copy matches the print; verify each against the document and reject the rest (a copy whose figures appear nowhere in the text is fabricated). QA INFO: recompute differs 4.55% from the printed contained figure, but the printed tonnes/grade/contained carry ±6.18% 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: Probable Santo Domingo 251.2 Mt at 0.04 g/t Au, 309 koz (line 3393) matches this copy; the conflicting 305.1 Mt sibling is the 'Total Probable' rollup and is rejected. Table 22 is titled 'Santo Domingo Estimated Mineral Reserves as at March 31, 2024' (line 3385) and lines 3365-3366 state 'The effective date of the Mineral Reserve estimate is March
t91a fix (p4): mining_area: '' -> 'Santo Domingo'. Printed Table 22 line 3393-3394: "Probable Mineral Reserves Santo Domingo 251.2 0.27 0.04 26.6 309 673 45.1". The stored 251,200,000 t / 0.04 g/t Au / 309,000 oz is that Santo-Domingo STAGE line, not the whole-project probable — the printed whole-project probable is "Total Probable Mineral Reserves 305.1 0.25 0.04 26.2 346 761 55.8" (line 3396). Its Iris Norte sibling 4e247020 already carries mining_area='Iris Norte' (53.9 Mt / 36 koz, line 3395) and 309 + 36 = 345 koz vs the printed Total Probable 346 koz (one print step), 251.2 + 53.9 = 305.1 Mt EXACTLY, so the pair is a complete leaf set and only the label is wrong. Figures are print-exact and unchanged; recompute 251.2 Mt @ 0.04 g/t = 323,050 oz vs printed 309,000 (4.35%), fully inside the +/-12.5% half-step band of a two-decimal 0.04 g/t print — printed 309 koz canonical. Recovered-metal WARN refuted: Table 22's column head is "Contained Metal" (line 3386); "Total Gold Ounces Recovered koz 411.6" (line 3558) belongs to the LOM production summary (line 3549), not the reserve table.
t91a print-round