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).

Samarco

Brazil · Producing · 50.0% ownedUnverified

Same deposit, other owners: NYSE:VALE (50.0%) — each filer reports its own statement of the same orebody; figures can differ by convention and as-at date.

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.

Category	Tonnes (Mt)	Grade (% Fe)	Contained (Mt Fe)	As at
Measured	2,400.00 Mt	38.30%	919.20 Mt Fe	30 June 2026
Indicated	1,500.00 Mt	36.80%	552.00 Mt Fe	30 June 2026
M&I = Measured + Indicated (overlaps both)	3,900.00 Mt	37.70%	1,470.30 Mt Fe	30 June 2026
Inferred	420.00 Mt	37.40%	157.08 Mt Fe	30 June 2026
Total Resources	4,320.00 Mt	37.69%	1,628.28 Mt Fe	30 June 2026
Proved	216.00 Mt	42.40%	91.58 Mt Fe	30 June 2026
Probable	582.00 Mt	42.80%	249.10 Mt Fe	30 June 2026
Total Reserves	798.00 Mt	42.70%	340.75 Mt Fe	30 June 2026

M&I is the issuer's printed Measured + Indicated subtotal — it overlaps the Measured and Indicated rows and is never added alongside them; the Total rows and every rollup already exclude it.

Cut-off grade

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Price assumption

US$130.18/t · US$125.00/t

JORC code year

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Peer benchmark — producing Fe projects (34 with resources)Resource size P81Resource 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: 20-F: 20-F · 30 June 2026
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$

Current R&R

Resources

Category	Tonnes (Mt)	Fe		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (% Fe)	Contained (Mt Fe)	As at	Source	Provenance
Measured	2,400.00 Mt	38.30%	919.20 Mt Fe	30 June 2026	6.3 Iron ore Mineral resources As at 30 June 2026Unverified Evidence record Samarco Measured · Fe · as at 2026-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 2400000000 Grade 38.3000 Contained (t Fe) 919200000 Classification Resource Source trail 20-F: 20-F 6.3 Iron ore Mineral resources As at 30 June 2026 Published 2026-08-18 Verification Approved; not independently verified · Model extracted QA WARN: figures within print rounding of a stored row of the same company/project/area/category under a DIFFERENT as-at date — likely a re-presentation (DFS / annual statement / global MRE restating an already-stored estimate, possibly at coarser rounding). Keep one operative copy; verify supersession before storing both. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.

Inferred

420.00 Mt

37.40%

157.08 Mt Fe

30 June 2026

6.3 Iron ore Mineral resources As at 30 June 2026Unverified

notes (6)

Source: 20-F: 20-F · published 18 Aug 2026

Ref: 6.3 Iron ore Mineral resources As at 30 June 2026

SK-1300 — Reporting code of record: SK-1300
@ US$ 130.18/t — Metal price assumption used to derive this estimate.
attrib — Figures are net to the issuer's ownership interest as reported (attributable basis) — NOT 100% of the project.

QA notes:

QA INFO: inclusive-of-reserves flag cleared on an inferred row — reserves derive from M&I only, so the flag is meaningless on inferred. QA WARN: figures within print rounding of a stored row of the same company/project/area/category under a DIFFERENT as-at date — likely a re-presentation (DFS / annual statement / global MRE restating an already-stored estimate, possibly at coarser rounding). Keep one operative copy; verify supersession before storing both.
QA approve (t119v): source-table reconciled; printed values, basis and vintage verified
t119v

Reserves

Category	Tonnes (Mt)	Fe		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (% Fe)	Contained (Mt Fe)	As at	Source	Provenance
Proved	216.00 Mt	42.40%	91.58 Mt Fe	30 June 2026	6.3 Iron ore Mineral reserves As at 30 June 2026Unverified Evidence record Samarco Proved · Fe · as at 2026-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 216000000 Grade 42.4000 Contained (t Fe) 91584000 Classification Reserve Source trail 20-F: 20-F 6.3 Iron ore Mineral reserves As at 30 June 2026 Published 2026-08-18 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (6) Source: 20-F: 20-F · published 18 Aug 2026 Ref: 6.3 Iron ore Mineral reserves As at 30 June 2026 SK-1300 — Reporting code of record: SK-1300 @ US$ 125/t — Metal price assumption used to derive this estimate. attrib — Figures are net to the issuer's ownership interest as reported (attributable basis) — NOT 100% of the project. QA notes: QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA approve (t119v): source-table reconciled; printed values, basis and vintage verified t119v
Probable	582.00 Mt	42.80%	249.10 Mt Fe	30 June 2026	6.3 Iron ore Mineral reserves As at 30 June 2026Unverified Evidence record Samarco Probable · Fe · as at 2026-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 582000000 Grade 42.8000 Contained (t Fe) 249096000 Classification Reserve Source trail 20-F: 20-F 6.3 Iron ore Mineral reserves As at 30 June 2026 Published 2026-08-18 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (6) Source: 20-F: 20-F · published 18 Aug 2026 Ref: 6.3 Iron ore Mineral reserves As at 30 June 2026 SK-1300
Total Reserves	798.00 Mt	42.70%	340.75 Mt Fe	30 June 2026	6.3 Iron ore Mineral reserves As at 30 June 2026Unverified Evidence record Samarco Total Reserve · Fe · as at 2026-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 798000000 Grade 42.7000 Contained (t Fe) 340746000 Classification Reserve Source trail 20-F: 20-F 6.3 Iron ore Mineral reserves As at 30 June 2026 Published 2026-08-18 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (6) Source: 20-F: 20-F · published 18 Aug 2026 Ref: 6.3 Iron ore Mineral reserves As at 30 June 2026