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).

Grassy Mountain

Oregon, United States · 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	19.19 Mt	0.58 g/t	0.36 Moz	30 June 2022
Indicated	11.70 Mt	1.03 g/t	0.39 Moz	30 June 2022
Inferred	1.04 Mt	1.27 g/t	0.04 Moz	30 June 2022
Total Resources	31.94 Mt	0.77 g/t	0.80 Moz	30 June 2022
Proved	0.24 Mt	6.17 g/t	0.05 Moz	30 June 2022
Probable	1.50 Mt	6.86 g/t	0.33 Moz	30 June 2022
Total Reserves	1.73 Mt	6.86 g/t	0.38 Moz	30 June 2022

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	19.19 Mt	2.47 g/t	1.53 Moz	30 June 2022
Indicated	11.70 Mt	3.94 g/t	1.48 Moz	30 June 2022
Inferred	1.04 Mt	3.74 g/t	0.13 Moz	30 June 2022
Total Resources	31.94 Mt	3.05 g/t	3.14 Moz	30 June 2022
Proved	0.24 Mt	8.91 g/t	0.07 Moz	30 June 2022
Probable

Cut-off grade

0.0110 g/t Ag · 0.0110 g/t Au · 0.1000 g/t Au · 0.1000 g/t Ag

Price assumption

US$1750.00/oz · US$1600.00/oz

JORC code year

—

Peer benchmark — developing Au projects (284 with resources)Resource size P47Resource grade P39View 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: 10-K: 10-K · 30 June 2022
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$
Disagreement flags: 3 rows

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Measured	19.19 Mt	0.58 g/t	0.36 Moz	2.47 g/t	1.53 Moz	30 June 2022	Grassy Mountain Property Summary of Mineral Resources / Silver (Ag) tableUnverified Evidence record Grassy Mountain Measured · Ag · as at 2022-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 19189678.8052 Grade 2.4686 Contained (oz) 1529000.0000 Classification Resource Source trail 10-K: 10-K Grassy Mountain Property Summary of Mineral Resources / Silver (Ag) table Published 2025-09-25 Verification Approved; not independently verified · Model extracted QA INFO: short-ton document — printed tonnage/contained were US short tons; converted x0.90718474 to metric tonnes deterministically at parse (grade unchanged). Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Proved	0.24 Mt	6.17 g/t	0.05 Moz	8.91 g/t	0.07 Moz	30 June 2022	Grassy Mountain Property Summary of Mineral Reserves / Gold (Au) tableUnverified Evidence record Grassy Mountain Proved · Au · as at 2022-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 235868.0324 Grade 6.1714 Contained (oz) 47000.0000 Classification Reserve Source trail 10-K: 10-K Grassy Mountain Property Summary of Mineral Reserves / Gold (Au) table Published 2025-09-25 Verification Approved; not independently verified · Model extracted QA INFO: short-ton document — printed tonnage/contained were US short tons; converted x0.90718474 to metric tonnes deterministically at parse (grade unchanged). Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K · published 25 Sept 2025 Ref: Grassy Mountain Property Summary of Mineral Reserves / Gold (Au) table SK-1300 — Reporting code of record: SK-1300 Cutoff 0.10 g/t Au — Cut-off grade assumption from the source statement. @ US$ 1,600/oz — Metal price assumption used to derive this estimate. QA notes: QA INFO: short-ton document — printed tonnage/contained were US short tons; converted x0.90718474 to metric tonnes deterministically at parse (grade unchanged).
Probable	1.50 Mt	6.86 g/t	0.33 Moz	9.94 g/t	0.49 Moz	30 June 2022	Grassy Mountain Property Summary of Mineral Reserves / Silver (Ag) tableUnverified Evidence record Grassy Mountain Probable · Ag · as at 2022-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 1498669.1905 Grade 9.9429 Contained (oz) 486000.0000 Classification Reserve Source trail 10-K: 10-K Grassy Mountain Property Summary of Mineral Reserves / Silver (Ag) table Published 2025-09-25 Verification Approved; not independently verified · Model extracted QA WARN: recomputed contained 479080.0000 oz vs reported 486000 oz (1.42% disagreement) QA INFO: short-ton document — printed tonnage/contained were US short tons; converted x0.90718474 to metric tonnes deterministically at parse (grade unchanged). Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K
Total Reserves	1.73 Mt	6.86 g/t	0.38 Moz	9.94 g/t	0.55 Moz	30 June 2022	Grassy Mountain Property Summary of Mineral Reserves / Silver (Ag) table — Total mineral reserves rowUnverified Evidence record Grassy Mountain Total Reserve · Ag · as at 2022-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 1734537.2229 Grade 9.9429 Contained (oz) 554000.0000 Classification Reserve Source trail 10-K: 10-K Grassy Mountain Property Summary of Mineral Reserves / Silver (Ag) table — Total mineral reserves row Published 2025-09-25 Verification Approved; not independently verified · Model extracted QA INFO: short-ton document — printed tonnage/contained were US short tons; converted x0.90718474 to metric tonnes deterministically at parse (grade unchanged). Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K