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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 | — | — | — | — |
| Indicated | — | — | — | — |
| M&I = Measured + Indicated (overlaps both) | 105.91 Mt | 0.72 g/t | 2.46 Moz | 30 Sept 2025 |
| Inferred | — | — | — | — |
| Total Resources | 39.29 Mt | 0.75 g/t | 0.94 Moz | 30 Sept 2025 |
| Proved | 10.59 Mt | 1.04 g/t | 0.35 Moz | 30 Sept 2025 |
| Probable | 56.03 Mt | 0.65 g/t | 1.16 Moz | 30 Sept 2025 |
| Total Reserves | 66.62 Mt | 0.71 g/t | 1.52 Moz | 30 Sept 2025 |
M&I is the issuer's printed Measured + Indicated subtotal — it overlaps the Measured and Indicated rows and is never added alongside them; the Total rows and every rollup already exclude it.
Dotted tonnes/grade are derived under the active Resources treatment: tonnes are netted of (or grossed by) the reserve tonnage alongside contained, and grade is re-derived as netted contained ÷ netted tonnes — not the published figures.
| Category | Tonnes (Mt) | Grade (g/t Ag) | Contained (Moz Ag) | As at |
|---|---|---|---|---|
| Measured | — | — | — | — |
| Indicated | — | — | — | — |
| M&I = Measured + Indicated (overlaps both) | 50.68 Mt | 4.60 g/t | 7.42 Moz | 30 Sept 2025 |
| Inferred | — | — | — | — |
| Total Resources | 12.79 Mt |
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 | As at | Source | Provenance | ||
|---|---|---|---|---|---|---|---|---|---|
| Grade (g/t Au) | Contained (Moz Au) | Grade (g/t Ag) | Contained (Moz Ag) | ||||||
| Total | Total Resources | 12.79–39.29 Mt | 0.75 g/t | 0.94 Moz | |||||
| 2.99 g/t |
| 1.23 Moz |
| 30 Sept 2025 |
| Proved | 2.11 Mt | 6.56 g/t | 0.45 Moz | 30 Sept 2025 |
| Probable | 35.78 Mt | 5.00 g/t | 5.75 Moz | 30 Sept 2025 |
| Total Reserves | 37.89 Mt | 5.10 g/t | 6.20 Moz | 30 Sept 2025 |
M&I is the issuer's printed Measured + Indicated subtotal — it overlaps the Measured and Indicated rows and is never added alongside them; the Total rows and every rollup already exclude it.
Dotted tonnes/grade are derived under the active Resources treatment: tonnes are netted of (or grossed by) the reserve tonnage alongside contained, and grade is re-derived as netted contained ÷ netted tonnes — not the published figures.
| 1.23 Moz |
| 30 Sept 2025 |
derived from 1 row
|
| — |
| Oxide | M&I = Measured + Indicated (overlaps both) | 50.68–99.14 Mt | 0.61 g/t | 1.96 Moz | 4.60 g/t | 7.42 Moz | 30 Sept 2025 | 17Unverified | notes (7)Source: Orla Mining Annual Information Form FY2025 (R&R eff. 31 Dec 2025 incl. Musselwhite) · published 19 Mar 2026 Ref: 17
QA notes:
|
| Sulphide | M&I = Measured + Indicated (overlaps both) | 6.76 Mt | 2.30 g/t | 0.50 Moz | — | — | 30 Sept 2025 | 17Unverified | notes (7)Source: Orla Mining Annual Information Form FY2025 (R&R eff. 31 Dec 2025 incl. Musselwhite) · published 19 Mar 2026 Ref: 17
QA notes:
|
| Area | Category | Tonnes (Mt) | Au | Ag | As at | Source | Provenance | ||
|---|---|---|---|---|---|---|---|---|---|
| Grade (g/t Au) | Contained (Moz Au) | Grade (g/t Ag) | Contained (Moz Ag) | ||||||
| Total | Proved | 10.59 Mt | 1.04 g/t | 0.35 Moz | — | — | 30 Sept 2025 | Table 5: South Railroad Mineral Reserves (Dark Star and Pinion Deposits) / South Railroad Technical Report Summary Information – Dark Star & Pinion ConsolidatedUnverified | notes (4)Source: Orla Mining Announces Results of the Updated Feasibility Study and Approves Start of Construction Spending for the South Railroad Project · published 15 Jan 2026 Ref: Table 5: South Railroad Mineral Reserves (Dark Star and Pinion Deposits) / South Railroad Technical Report Summary Information – Dark Star & Pinion Consolidated
QA notes:
|
| Total | Probable | 56.03 Mt | 0.65 g/t | 1.16 Moz | — | — | 30 Sept 2025 | Table 5: South Railroad Mineral Reserves (Dark Star and Pinion Deposits) / South Railroad Technical Report Summary Information – Dark Star & Pinion ConsolidatedUnverified | |
| Total | Total Reserves | 66.62 Mt | 0.71 g/t | 1.52 Moz | — | — | 30 Sept 2025 | Table 5: South Railroad Mineral Reserves (Dark Star and Pinion Deposits) / South Railroad Technical Report Summary Information – Dark Star & Pinion ConsolidatedUnverified | notes (4) |
| Dark Star | Proved | 8.47 Mt | 1.12 g/t | 0.30 Moz | — | — | 30 Sept 2025 | South Railroad Technical Report Summary Information – Mineral Reserves – Dark StarUnverified | |
| Dark Star | Probable | 20.25 Mt | 0.70 g/t | 0.46 Moz | — | — | 30 Sept 2025 | South Railroad Technical Report Summary Information – Mineral Reserves – Dark StarUnverified | |
| Oxide | Total Reserves | 37.89 Mt | — | — | 5.10 g/t | 6.20 Moz | 30 Sept 2025 | 16Unverified | notes (5) |
| Pinion | Proved | 2.11 Mt | 0.73 g/t | 0.05 Moz | 6.56 g/t | 0.45 Moz | 30 Sept 2025 | South Railroad Technical Report Summary Information – Mineral Reserves – PinionUnverified | |
| Pinion | Probable | 35.78 Mt | 0.61 g/t | 0.71 Moz | 5.00 g/t | 5.75 Moz | 30 Sept 2025 | South Railroad Technical Report Summary Information – Mineral Reserves – PinionUnverified | |
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. “M&I” is the issuer's printed Measured + Indicated subtotal: it overlaps the Measured and Indicated rows and is never added alongside them. All derived totals and rollups on this site already exclude the overlapping rows.
Dotted Total-row tonnes/grade are derived under the active Resources treatment: tonnes netted of (or grossed by) the reserve tonnage alongside contained, grade re-derived as netted contained ÷ netted tonnes — not the published figures.