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).

Challenger

South 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	8.49 Mt	0.45 g/t	0.12 Moz	08 Sept 2025
Inferred	2.09 Mt	2.84 g/t	0.19 Moz	08 Sept 2025
Total Resources	10.60 Mt	0.92 g/t	0.31 Moz	10 Sept 2025
Proved	—	—	—	—
Probable	—	—	—	—
Total Reserves	—	—	—	—

Cut-off grade

0.0000 g/t Au · 0.5000 g/t Au · 1.0000 g/t Au · 2.0000 g/t Au

Price assumption

—

JORC code year

2012

Peer benchmark — developing Au projects (284 with resources)Resource size P30Resource grade P45View 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: Challenger DFS Pit Optimisation Drilling Begins · 10 Sept 2025
Reporting code: JORC 2012
Convention: unknown
Currency assumption: A$
Disagreement flags: 6 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	8.49 Mt	0.45 g/t	0.12 Moz	08 Sept 2025	page 3Unverified Evidence record Challenger Indicated · Au · as at 2025-09-08 Reported figure Area Whole project Basis 100% Ore tonnes (t) 8490000.0000 Grade 0.4500 Contained (oz) 122000.0000 Classification Resource Source trail Definitive Feasibility Study Begins for 'Stage 1' Production page 3 Published 2025-09-29 Verification Approved; not independently verified · Model extracted QA WARN: tonnes/contained equal the SUM of 3 sibling row(s) of the same classification/category/commodity (Challenger Main Open Pit, Tailings Storage Facility 1, Tailings Storage Facility 2) — 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: possible missing commodity coverage — the document prints Ag grade/contained column(s) but the extraction emitted no Ag rows; verify the R&R table columns (live class: GMTL Pilot Mountain Zn). Copies a pre-filled issue record so you can send it through your normal channel.