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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).

Mt Chalmers

Queensland, 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.

Au

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	4.20 Mt	0.69 g/t	0.09 Moz	30 Apr 2024
Indicated	5.80 Mt	0.28 g/t	0.05 Moz	30 Apr 2024
Inferred	1.30 Mt	0.19 g/t	0.01 Moz	30 Apr 2024
Total Resources	11.30 Mt	0.42 g/t	0.15 Moz	30 Apr 2024
Proved	5.10 Mt	0.58 g/t	0.10 Moz	30 Apr 2024
Probable	4.50 Mt	0.37 g/t	0.05 Moz	30 Apr 2024
Total Reserves	9.60 Mt	0.48 g/t	0.15 Moz	30 Apr 2024

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	4.20 Mt	4.97 g/t	0.67 Moz	30 Apr 2024
Indicated	5.80 Mt	3.99 g/t	0.74 Moz	30 Apr 2024
Inferred	1.30 Mt	5.41 g/t	0.23 Moz	30 Apr 2024
Total Resources	11.30 Mt	4.52 g/t	1.64 Moz	30 Apr 2024
Proved	5.10 Mt	4.70 g/t	0.77 Moz	30 Apr 2024
Probable

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	4.20 Mt	0.89%	0.04 Mt Cu	30 Apr 2024
Indicated	5.80 Mt	0.69%	0.04 Mt Cu	30 Apr 2024
Inferred	1.30 Mt	0.60%	0.01 Mt Cu	30 Apr 2024
Total Resources	11.30 Mt	0.75%	0.08 Mt Cu	30 Apr 2024
Proved	5.10 Mt	0.72%	0.04 Mt Cu	30 Apr 2024
Probable

Zn

Category	Tonnes (Mt)	Grade (% Zn)	Contained (Mt Zn)	As at
Measured	4.20 Mt	0.23%	0.01 Mt Zn	30 Apr 2024
Indicated	5.80 Mt	0.19%	0.01 Mt Zn	30 Apr 2024
Inferred	1.30 Mt	0.27%	3.51 kt Zn	30 Apr 2024
Total Resources	11.30 Mt	0.21%	0.02 Mt Zn	30 Apr 2024
Proved	5.10 Mt	0.25%	0.01 Mt Zn	30 Apr 2024
Probable

Cut-off grade

0.3000 g/t Au · 0.3000 % Zn · 0.3000 % Cu · 0.3000 g/t Ag

Price assumption

—

JORC code year

2012

Peer benchmark — developing Cu projects (124 with resources)Resource size P27Resource grade P71View 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: QMines Rapidly Advances Fully Funded DFS Towards Delivery · 30 Apr 2024
Reporting code: JORC 2012
Convention: unknown
Currency assumption: A$

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		Cu		Zn		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Zn)	Contained (Mt Zn)	As at	Source	Provenance
Measured	4.20 Mt	0.69 g/t	0.09 Moz	4.97 g/t	0.67 Moz	0.89%

Reserves

Category	Tonnes (Mt)	Au		Ag		Cu		Zn		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Zn)	Contained (Mt Zn)	As at	Source	Provenance
Proved	5.10 Mt	0.58 g/t	0.10 Moz	4.70 g/t	0.77 Moz	0.72%	0.04 Mt Cu	0.25%	0.01 Mt Zn	30 Apr 2024	10Unverified Evidence record Mt Chalmers Proved · Cu · as at 2024-04-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 5100000.0000 Grade 0.7200 Contained (t Cu) 36720.0000 Classification Reserve Source trail QMines Rapidly Advances Fully Funded DFS Towards Delivery 10 Published 2026-06-01 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (3) Source: QMines Rapidly Advances Fully Funded DFS Towards Delivery · published 01 June 2026 Ref: 10 JORC 2012 — Reporting code of record: JORC 2012 Cutoff 0.30 % Cu — Cut-off grade assumption from the source statement. QA notes: QA approved: verified against the source print by the tranche-21 agent pass
Probable	4.50 Mt	0.37 g/t	0.05 Moz	5.50 g/t	0.80 Moz	0.57%	0.03 Mt Cu	0.29%	0.01 Mt Zn	30 Apr 2024	10Unverified Evidence record Mt Chalmers Probable · Au · as at 2024-04-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 4500000.0000 Grade 0.3700 Contained (oz) 53530.9930 Classification Reserve Source trail QMines Rapidly Advances Fully Funded DFS Towards Delivery 10 Published 2026-06-01 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (3) Source:
Total Reserves	9.60 Mt	0.48 g/t	0.15 Moz	5.20 g/t	1.60 Moz	0.65%	0.06 Mt Cu	0.27%	0.03 Mt Zn	30 Apr 2024	10Unverified Evidence record Mt Chalmers Total Reserve · Zn · as at 2024-04-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 9600000.0000 Grade 0.2700 Contained (t Zn) 25920.0000 Classification Reserve Source trail QMines Rapidly Advances Fully Funded DFS Towards Delivery 10 Published 2026-06-01 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)