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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).

Rock Creek

Montana, United States · Exploring · 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.

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	—	—	—	—
Indicated	—	—	—	—
Inferred	90.05 Mt	51.43 g/t	148.29 Moz	31 Dec 2025
Total Resources	90.05 Mt	51.43 g/t	148.29 Moz	31 Dec 2025
Proved	—	—	—	—
Probable	—	—	—	—
Total Reserves	—	—	—	—

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	—	—	—	—
Indicated	—	—	—	—
Inferred	90.05 Mt	0.70%	0.60 Mt Cu	31 Dec 2025
Total Resources	90.05 Mt	0.70%	0.60 Mt Cu	31 Dec 2025
Proved	—	—	—	—
Probable	—

Cut-off grade

35.1000 % Cu · 35.1000 g/t Ag

Price assumption

US$26.00/t

JORC code year

—

Peer benchmark — exploring Cu projects (113 with resources)Resource size P59Resource grade P72View 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 · 31 Dec 2025
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$
Disagreement flags: 1 row

Current R&R

Resources

Category	Tonnes (Mt)	Ag		Cu		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Inferred	90.05 Mt	51.43 g/t	148.29 Moz	0.70%	0.60 Mt Cu	31 Dec 2025	Summary table: in-situ mineral resources exclusive of mineral reserves as of December 31, 2025 — Inferred ResourcesUnverified Evidence record Rock Creek Inferred · Cu · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 90045342.9229 Grade 0.7000 Contained (t Cu) 595167.6205 Classification Resource Source trail 10-K: 10-K Summary table: in-situ mineral resources exclusive of mineral reserves as of December 31, 2025 — Inferred Resources Published 2026-02-17 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 5.91% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.00% (rounding granularity) — treated as reconciled. 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.