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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 | 0.35 Mt | 0.39 g/t | 4 koz | 10 June 2026 |
| Indicated | 12.59 Mt | 0.46 g/t | 0.19 Moz | 07 Apr 2025 |
| Inferred | 16.87 Mt | 0.26 g/t | 0.14 Moz | 10 June 2026 |
| Total Resources | 29.80 Mt | 0.35 g/t | 0.33 Moz | 10 June 2026 |
| Proved | — | — | — | — |
| Probable | — | — | — | — |
| Total Reserves | — | — | — | — |
| Category | Tonnes (Mt) | Grade (g/t Ag) | Contained (Moz Ag) | As at |
|---|---|---|---|---|
| Measured | 0.35 Mt | 3.30 g/t | 0.04 Moz | 10 June 2026 |
| Indicated | 12.59 Mt | 4.30 g/t | 1.73 Moz | 07 Apr 2025 |
| Inferred | 16.87 Mt | 2.70 g/t | 1.47 Moz | 10 June 2026 |
| Total Resources | 29.80 Mt | 3.38 g/t | 3.23 Moz | 10 June 2026 |
| Proved | — | — | — | — |
| Probable |
| Category | Tonnes (Mt) | Grade (% Cu) | Contained (Mt Cu) | As at |
|---|---|---|---|---|
| Measured | 0.35 Mt | 0.92% | 3.18 kt Cu | 10 June 2026 |
| Indicated | 12.59 Mt | 1.20% | 0.15 Mt Cu | 07 Apr 2025 |
| Inferred | 16.87 Mt | 0.76% | 0.13 Mt Cu | 10 June 2026 |
| Total Resources | 29.80 Mt | 0.95% | 0.28 Mt Cu | 10 June 2026 |
| Proved | — | — | — | — |
| Probable |
Percentile of this project's current total Resource among covered peers (P100 = largest / highest grade). Basis and Inferred toggles apply.
| Area | Category | Tonnes (Mt) | Au | Ag | Cu | As at | Source | Provenance | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade (g/t Au) | Contained (Moz Au) | Grade (g/t Ag) | Contained (Moz Ag) | Grade (% Cu) | Contained (Mt Cu) | ||||||
| Total | Indicated | 12.59 Mt | 0.46 g/t | 0.19 Moz | 4.30 g/t | 1.73 Moz | 1.20% | ||||
| — |
| — |
| — |
| Total Reserves | — | — | — | — |
| — |
| — |
| — |
| Total Reserves | — | — | — | — |
| 07 Apr 2025 |
| Table 4: Global Mineral Resource Estimate for the Minto Project (Effective Date: April 7, 2025)Unverified |
notes (4)Source: Selkirk Copper Announces Initial Results from the Phase 2 Drill Program and Commencement of Technical Data Collection to Support Planned Feasibility Study · published 08 July 2026 Ref: Table 4: Global Mineral Resource Estimate for the Minto Project (Effective Date: April 7, 2025)
QA notes:
|
| Total | Inferred | 16.87 Mt | 0.26 g/t | 0.14 Moz | 2.70 g/t | 1.47 Moz | 0.76% | 0.13 Mt Cu | 10 June 2026 | Table 1: Updated summary of mineral resources for the Minto ProjectUnverified | notes (3)Source: Selkirk Copper Announces Updated Mineral Resource Estimate with 182% Increase in Measured & Indicated Copper and 184% Increase in Measured & Indicated Gold · published 30 July 2026 Ref: Table 1: Updated summary of mineral resources for the Minto Project
|
| Total | Total Resources | 29.80 Mt | 0.35 g/t | 0.33 Moz | 3.38 g/t | 3.23 Moz | 0.95% | 0.28 Mt Cu | 10 June 2026 | derived from 3 rows | — |
| Open Pit | Indicated | 21.78 Mt | 0.17 g/t | 0.12 Moz | 1.80 g/t | 1.29 Moz | 0.59% | 0.13 Mt Cu | 10 June 2026 | Table 1: Updated summary of mineral resources for the Minto ProjectUnverified | notes (4)Source: Selkirk Copper Announces Updated Mineral Resource Estimate with 182% Increase in Measured & Indicated Copper and 184% Increase in Measured & Indicated Gold · published 30 July 2026 Ref: Table 1: Updated summary of mineral resources for the Minto Project
QA notes:
|
| Open Pit | Inferred | 7.05 Mt | 0.13 g/t | 0.03 Moz | 1.60 g/t | 0.35 Moz | 0.55% | 0.04 Mt Cu | 10 June 2026 | Table 1: Updated summary of mineral resources for the Minto ProjectUnverified | notes (3)Source: Selkirk Copper Announces Updated Mineral Resource Estimate with 182% Increase in Measured & Indicated Copper and 184% Increase in Measured & Indicated Gold · published 30 July 2026 Ref: Table 1: Updated summary of mineral resources for the Minto Project
|
| Underground | Measured | 0.35 Mt | 0.39 g/t | 4 koz | 3.30 g/t | 0.04 Moz | 0.92% | 3.18 kt Cu | 10 June 2026 | Table 1: Updated summary of mineral resources for the Minto ProjectUnverified | notes (4)Source: Selkirk Copper Announces Updated Mineral Resource Estimate with 182% Increase in Measured & Indicated Copper and 184% Increase in Measured & Indicated Gold · published 30 July 2026 Ref: Table 1: Updated summary of mineral resources for the Minto Project
QA notes:
|
| Underground | Indicated | 25.68 Mt | 0.49 g/t | 0.40 Moz | 4.40 g/t | 3.64 Moz | 1.15% | 0.29 Mt Cu | 10 June 2026 | Table 1: Updated summary of mineral resources for the Minto ProjectUnverified | notes (3)Source: Selkirk Copper Announces Updated Mineral Resource Estimate with 182% Increase in Measured & Indicated Copper and 184% Increase in Measured & Indicated Gold · published 30 July 2026 Ref: Table 1: Updated summary of mineral resources for the Minto Project
|
| Underground | Inferred | 9.81 Mt | 0.36 g/t | 0.11 Moz | 3.50 g/t | 1.11 Moz | 0.91% | 0.09 Mt Cu | 10 June 2026 | Table 1: Updated summary of mineral resources for the Minto ProjectUnverified | notes (3)Source: Selkirk Copper Announces Updated Mineral Resource Estimate with 182% Increase in Measured & Indicated Copper and 184% Increase in Measured & Indicated Gold · published 30 July 2026 Ref: Table 1: Updated summary of mineral resources for the Minto Project
|
Rows are hierarchical, not additive — do not sum a column across rows. Whole-project rows (Area “Total”) already contain the indented named-area rows beneath them, and an issuer's printed per-deposit total can itself contain other listed areas. All derived totals and rollups on this site already exclude the overlapping rows.