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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).

Round Dam

Western Australia, Australia · 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.

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	—	—	—	—
Indicated	7.15 Mt	1.80 g/t	0.41 Moz	01 Apr 2026
Inferred	18.20 Mt	1.60 g/t	0.92 Moz	01 Apr 2026
Total Resources	17.03 Mt	1.58 g/t	0.86 Moz	01 Apr 2026
Proved	—	—	—	—
Probable	4.16 Mt	1.70 g/t	0.23 Moz	01 Apr 2026
Total Reserves	4.16 Mt	1.70 g/t	0.23 Moz	01 Apr 2026

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.

Cut-off grade

0.7000 g/t Au · 0.5000 g/t Au

Price assumption

A$3600.00/oz · A$5000.00/oz

JORC code year

2012

Peer benchmark — developing Au projects (284 with resources)Resource size P55Resource grade P70View 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: OBM Annual Resource and Reserve Statement · 01 Apr 2026
Reporting code: JORC 2012
Convention: inclusive
Currency assumption: A$
Disagreement flags: 9 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at	Source	Provenance
Total	Indicated	7.15 Mt	1.80 g/t	0.41 Moz	01 Apr 2026	4Unverified Evidence record Round Dam Indicated · Au · as at 2026-04-01 Reported figure Area Whole project Basis 100% Ore tonnes (t) 7152000.0000 Grade 1.8000 Contained (oz) 408000.0000 Classification Resource Source trail OBM Annual Resource and Reserve Statement 4 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA WARN: identical figures appear under ANOTHER area label of this project in the same document — likely one printed estimate stored twice (a summary/grouping line duplicating its leaf). Keep one copy; reject the relabelled twin. QA INFO: recompute differs 1.45% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.91% (rounding granularity) — treated as reconciled. \| QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Area	Category	Tonnes (Mt)	Au		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at	Source	Provenance
Total	Probable	4.16 Mt	1.70 g/t	0.23 Moz	01 Apr 2026	41Unverified Evidence record Round Dam Probable · Au · as at 2026-04-01 Reported figure Area Whole project Basis 100% Ore tonnes (t) 4162000.0000 Grade 1.7000 Contained (oz) 233000.0000 Classification Reserve Source trail OBM Annual Resource and Reserve Statement 41 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA WARN: tonnes/contained equal the SUM of 2 sibling row(s) of the same classification/category/commodity (Open Pit, Low Grade) — likely a printed multi-deposit rollup/subtotal. Policy keeps leaf rows and printed whole-project Totals only; reject mid-level rollups (double-count). QA INFO: recompute differs 2.37% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±3.17% (rounding granularity) — treated as reconciled. \| QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: OBM Annual Resource and Reserve Statement · published 14 July 2026 Ref: 41 JORC 2012 — Reporting code of record: JORC 2012 Cutoff 0.70 g/t Au — Cut-off grade assumption from the source statement. @ A$ 3,600/oz — Metal price assumption used to derive this estimate. QA notes: QA WARN: tonnes/contained equal the SUM of 2 sibling row(s) of the same classification/category/commodity (Open Pit, Low Grade) — likely a printed multi-deposit rollup/subtotal. Policy keeps leaf rows and printed whole-project Totals only; reject mid-level rollups (double-count). QA INFO: recompute differs 2.37% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±3.17% (rounding granularity) — treated as reconciled. QA approved: verified against the source print by the tranche-20 agent pass
Total	Total Reserves	4.16 Mt	1.70 g/t	0.23 Moz	01 Apr 2026	41Unverified Evidence record Round Dam Total Reserve · Au · as at 2026-04-01 Reported figure Area Whole project Basis 100% Ore tonnes (t) 4162000.0000 Grade 1.7000 Contained (oz) 233000.0000 Classification Reserve Source trail OBM Annual Resource and Reserve Statement 41 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 2.37% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±3.17% (rounding granularity) — treated as reconciled. \| QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: OBM Annual Resource and Reserve Statement
Low Grade	Probable	0.49 Mt	0.60 g/t	0.01 Moz	01 Apr 2026	41Unverified Evidence record Round Dam Probable · Au · as at 2026-04-01 Reported figure Area Low Grade Basis 100% Ore tonnes (t) 493000.0000 Grade 0.6000 Contained (oz) 10000.0000 Classification Reserve Source trail OBM Annual Resource and Reserve Statement 41 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 4.90% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±12.10% (rounding granularity) — treated as reconciled. \| QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: OBM Annual Resource and Reserve Statement · published 14 July 2026 Ref: 41
Low Grade	Total Reserves	0.49 Mt	0.60 g/t	0.01 Moz	01 Apr 2026	41Unverified Evidence record Round Dam Total Reserve · Au · as at 2026-04-01 Reported figure Area Low Grade Basis 100% Ore tonnes (t) 493000.0000 Grade 0.6000 Contained (oz) 10000.0000 Classification Reserve Source trail OBM Annual Resource and Reserve Statement 41 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 4.90% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±12.10% (rounding granularity) — treated as reconciled. \| QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: OBM Annual Resource and Reserve Statement · published 14 July 2026
Open Pit	Probable	3.67 Mt	1.90 g/t	0.22 Moz	01 Apr 2026	6Unverified Evidence record Round Dam Probable · Au · as at 2026-04-01 Reported figure Area Open Pit Basis 100% Ore tonnes (t) 3669000.0000 Grade 1.9000 Contained (oz) 223000.0000 Classification Reserve Source trail OBM Annual Resource and Reserve Statement 6 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: OBM Annual Resource and Reserve Statement · published 14 July 2026 Ref: 6 JORC 2012 — Reporting code of record: JORC 2012
Open Pit	Total Reserves	3.67 Mt	1.90 g/t	0.22 Moz	01 Apr 2026	6Unverified Evidence record Round Dam Total Reserve · Au · as at 2026-04-01 Reported figure Area Open Pit Basis 100% Ore tonnes (t) 3669000.0000 Grade 1.9000 Contained (oz) 223000.0000 Classification Reserve Source trail OBM Annual Resource and Reserve Statement 6 Published 2026-07-14 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-20 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: OBM Annual Resource and Reserve Statement · published 14 July 2026 Ref: 6 JORC 2012