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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).

Herbert Gold

Alaska, 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.

Au

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	—	—	—	—
Indicated	4.73 Mt	9.47 g/t	1.44 Moz	17 July 2024
Inferred	1.81 Mt	8.85 g/t	0.52 Moz	17 July 2024
Total Resources	6.54 Mt	9.30 g/t	1.95 Moz	17 July 2024
Proved	—	—	—	—
Probable	—	—	—	—
Total Reserves	—	—	—	—

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	—	—	—	—
Indicated	4.73 Mt	5.86 g/t	0.89 Moz	17 July 2024
Inferred	1.81 Mt	6.70 g/t	0.39 Moz	17 July 2024
Total Resources	6.54 Mt	6.09 g/t	1.28 Moz	17 July 2024
Proved	—	—	—	—
Probable

Cut-off grade

2.5000 g/t Ag · 2.5000 g/t Au

Price assumption

—

JORC code year

—

Peer benchmark — exploring Au projects (297 with resources)Resource size P80Resource grade P96View 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: Grande Portage Resources Files on SEDAR+ the Mineral Resource Estimate for the Herbert Gold project Detailing Indicated Resources of 1,438,500 Ounces at 9.47gpt Gold and Inferred Resources of 515,700 Ounces at 8.85gpt Gold · 17 July 2024
Reporting code: unknown
Convention: unknown
Currency assumption: US$
Disagreement flags: 6 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Total	Indicated	4.73 Mt	9.47 g/t	1.44 Moz	5.86 g/t	0.89 Moz	17 July 2024	About Grande Portage / Mineral Resource paragraphUnverified

Total

Inferred

1.81 Mt

8.85 g/t

0.52 Moz

6.70 g/t

0.39 Moz

17 July 2024

About Grande Portage / Mineral Resource paragraphUnverified

notes (13)

Source: Grande Portage Resources Files on SEDAR+ the Mineral Resource Estimate for the Herbert Gold project Detailing Indicated Resources of 1,438,500 Ounces at 9.47gpt Gold and Inferred Resources of 515,700 Ounces at 8.85gpt Gold · published 22 July 2024

Ref: About Grande Portage / Mineral Resource paragraph

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Ag — Cut-off grade assumption from the source statement.

QA notes:

QA BLOCK: recomputed contained 427260.5949 oz vs reported 390600 oz (9.39% disagreement)
QA annotate (t98v, a2.txt):
Row stands on the print; the ISSUER's own sentence is internally inconsistent on the inferred SILVER pair alone. Doc 3f67bd51 is a one-page release whose sole resource statement is: "an Indicated Resource of 1,438,500 ounces of gold at an average grade of 9.47 g/t Au (4,726,000 tonnes); and an Inferred Resource of 515,700 ounces of gold at an average grade of 8.85 g/t Au (1,813,000 tonnes), as well as an Indicated Resource of 891,600 ounces of silver at an average grade of 5.86 g/t Ag (4,726,000 tonnes); and an Inferred Resource of 390,600 ounces of silver at an average grade of 7.33 g/t silver (1,813,000 tonnes)." All three stored cells (1,813,000 t / 7.33 g/t / 390,600 oz) come from that clause verbatim. Disagreeing cells: 1,813,000 t at 7.33 g/t is 427,260 oz, not 390,600 oz; equivalently the metal implies 6.7011 g/t, 9.3% below a two-decimal grade band, which granularity cannot reach. The other THREE pairs in the same sentence reconcile to within 0.2% (Au indicated 9.4673 vs 9.47; Au inferred 8.8473 vs 8.85; Ag indicated 5.8679 vs 5.86), which isolates the inferred-silver pair as Grande Portage's own error. No FIX: the release prints no second figure and there is no table in the source text to arbitrate between 7.33 g/t and 390,600 oz.

A Vein

Indicated

0.01 Mt

3.20 g/t

0.7 koz

0.83 g/t

0.2 koz

12 June 2024

Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Source: Grande Portage Resources Increases Ounces and Grade in an Updated Mineral Resource Estimate for the Herbert Gold Deposit in SE Alaska.---1,438,500 Indicated (9.47gpt) and 515,700 Inferred (8.85gpt) Gold Ounces · published 12 June 2024

Ref: Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class). QA INFO: recompute differs 2.88% from the printed contained figure, but the printed tonnes/grade/contained carry ±12.16% rounding granularity (capped per component; the true half-step band of coarse prints is wider) and the remainder sits under the warn threshold — treated as reconciled.
QA approve (t103v, q2.txt): verified against the print
t103v

Deep Trench Vein

Indicated

0.73 Mt

7.14 g/t

0.17 Moz

2.96 g/t

0.07 Moz

12 June 2024

Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class).
QA approve (t103v, q2.txt): verified against the print
t103v

F Vein

Indicated

0.04 Mt

4.93 g/t

0.01 Moz

1.19 g/t

1.7 koz

12 June 2024

Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class). QA WARN: identical tonnage to another row of THIS document labelled 'inferred' for the same project/area/commodity, while this row is labelled 'indicated' — likely a category-column shift (Measured/Indicated/Inferred header misalignment at extraction), not a reclassification (which re-estimates the tonnage). Verify which classification the source prints; if this row's category is wrong the whole table is likely shifted. NOTE: a few issuers do print two categories with genuinely identical tonnage AND contained metal (t32 AAR Eagles Nest) — check the print before rejecting.
QA approve (t103v, q2.txt): verified against the print
t103v

F Vein

Inferred

0.04 Mt

5.20 g/t

0.01 Moz

1.17 g/t

1.7 koz

12 June 2024

Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class). QA WARN: identical tonnage to another row of THIS document labelled 'indicated' for the same project/area/commodity, while this row is labelled 'inferred' — likely a category-column shift (Measured/Indicated/Inferred header misalignment at extraction), not a reclassification (which re-estimates the tonnage). Verify which classification the source prints; if this row's category is wrong the whole table is likely shifted. NOTE: a few issuers do print two categories with genuinely identical tonnage AND contained metal (t32 AAR Eagles Nest) — check the print before rejecting.
QA approve (t103v, q2.txt): verified against the print
t103v

Goat HW Vein

Inferred

4 kt

3.68 g/t

0.5 koz

0.59 g/t

0.08 koz

12 June 2024

Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class). QA INFO: recompute differs 5.35% from the printed contained figure, but the printed tonnes/grade/contained carry ±12.14% rounding granularity (capped per component; the true half-step band of coarse prints is wider) and the remainder sits under the warn threshold — treated as reconciled.
QA approve (t103v, q2.txt): verified against the print
t103v

Main Hanging Wall Vein

Indicated

0.49 Mt

9.51 g/t

0.15 Moz

6.03 g/t

0.09 Moz

12 June 2024

Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class).
QA approve (t103v, q2.txt): verified against the print
t103v

Main Hanging Wall Vein

Inferred

0.29 Mt

5.16 g/t

0.05 Moz

6.85 g/t

0.06 Moz

12 June 2024

Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class).
QA approve (t103v, q2.txt): verified against the print
t103v

Sleeping Giant

Indicated

0.45 Mt

11.07 g/t

0.16 Moz

6.97 g/t

0.10 Moz

12 June 2024

Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Indicated Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class).
QA approve (t103v, q2.txt): verified against the print
t103v

Sleeping Giant

Inferred

0.42 Mt

13.19 g/t

0.18 Moz

7.86 g/t

0.11 Moz

12 June 2024

Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt CutoffUnverified

notes (5)

Ref: Inferred Mineral Resource by Vein, Cut to 181 gpt — 2.5 gpt Cutoff

Unknown code — Reporting code not yet captured for this row.
Cutoff 2.50 g/t Au — Cut-off grade assumption from the source statement.

QA notes:

QA INFO: as_at equals the publication date (2024-06-12) and no printed effective date was found — verify. The document states no 'effective'/'as at'/'as of' date near that date, so the statement date may simply have been borrowed from the dateline (t71 PGLD/NRM class).
QA approve (t103v, q2.txt): verified against the print
t103v