Del Toro

Reported figure

Area

Whole project

Basis

100%

Ore tonnes (t)

1190000.0000

Grade

0.1500

Contained (oz)

10000.0000

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred Total (UG)

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA WARN: identical figures appear under ANOTHER area label of this project in the same document — likely one printed estimate stored twice (a summary/grouping line duplicating its leaf). Keep one copy; reject the relabelled twin. QA WARN: tonnes/contained equal the SUM of 2 sibling row(s) of the same classification/category/commodity (UG, Perseverancia — Sulphides (UG)) — likely a printed multi-deposit rollup/subtotal. Policy keeps leaf rows and printed whole-project Totals only; reject mid-level rollups (double-count). QA WARN: mining_area 'Total (UG)' looks like a table SUBTOTAL line, not a leaf area — approving it alongside the leaf areas double-counts. Reject it (or reject the leaves) before approval. QA INFO: recompute differs 42.61% from the printed contained figure, but the print is exactly consistent with the recompute at the printed tonnes/grade/contained granularity (rounding-interval overlap) — treated as reconciled. QA INFO: identical figures to area(s) 'UG' — likely the same printed line under two labels (a summary and a detail table); keep one label and reject the other. | QA fix: Printed whole-project total: Table 36 'Inferred Total (UG) / All Mineral Types' = Table 5 (p.24) 'DEL TORO Inferred Total (UG)' 1.19 Mt, 0.15 g/t Au / 0.01 Moz. Stored with mining_area empty per convention; the 'UG' twin is rejected.

Reported figure

Area

Dolores — Oxides + Transition (UG)

Basis

100%

Ore tonnes (t)

40000.0000

Grade

238.0000

Contained (oz)

330000.0000

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 7.25% from the printed contained figure, but the printed tonnes/grade/contained carry ±7.73% 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.

Reported figure

Area

Dolores — Oxides + Transition (UG)

Basis

100%

Ore tonnes (t)

80000.0000

Grade

2.9100

Contained (t Pb)

2463.0066

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 5.48% from the printed contained figure, but the printed tonnes/grade/contained carry ±6.17% 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.

Reported figure

Area

Dolores — Sulphides (UG)

Basis

100%

Ore tonnes (t)

190000.0000

Grade

210.0000

Contained (oz)

1270000.0000

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 1.01% from the printed contained figure, but the printed tonnes/grade/contained carry ±5.41% 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.

Reported figure

Area

Dolores — Sulphides (UG)

Basis

100%

Ore tonnes (t)

160000.0000

Grade

2.3900

Contained (t Pb)

3773.8885

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 1.33% from the printed contained figure, but the printed tonnes/grade/contained carry ±3.33% 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.

Reported figure

Area

Perseverancia — Oxides + Transition (UG)

Basis

100%

Ore tonnes (t)

50000.0000

Grade

0.0700

Contained (oz)

112.5276

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

Reported figure

Area

Perseverancia — Oxides + Transition (UG)

Basis

100%

Ore tonnes (t)

250000.0000

Grade

0.0800

Contained (oz)

643.0149

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

Reported figure

Area

Perseverancia — Sulphides (UG)

Basis

100%

Ore tonnes (t)

10000.0000

Grade

201.0000

Contained (oz)

90000.0000

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA BLOCK: recomputed contained 64623.0006 oz vs reported 90000.00 oz (28.20% disagreement) Rounding-interval overlap exists at the printed granularity, but a 28.20% gap exceeds the 10% interval-waiver ceiling (t23 STM AuEq-miscopy precedent) — verify the printed contained figure before approval.

Reported figure

Area

Perseverancia — Sulphides (UG)

Basis

100%

Ore tonnes (t)

10000.0000

Grade

0.1100

Contained (oz)

35.3658

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

Reported figure

Area

San Juan — Oxides + Transition (UG)

Basis

100%

Ore tonnes (t)

60000.0000

Grade

279.0000

Contained (oz)

510000.0000

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 5.53% from the printed contained figure, but the printed tonnes/grade/contained carry ±7.16% 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.

Reported figure

Area

San Juan — Oxides + Transition (UG)

Basis

100%

Ore tonnes (t)

360000.0000

Grade

3.3000

Contained (t Pb)

11861.4405

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

Reported figure

Area

San Juan — Sulphides (UG)

Basis

100%

Ore tonnes (t)

230000.0000

Grade

4.5700

Contained (t Pb)

10623.1333

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 1.06% from the printed contained figure, but the printed tonnes/grade/contained carry ±2.28% 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.

Reported figure

Area

San Juan — Sulphides (UG)

Basis

100%

Ore tonnes (t)

180000.0000

Grade

186.0000

Contained (oz)

1090000.0000

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA INFO: recompute differs 1.25% from the printed contained figure, but the printed tonnes/grade/contained carry ±3.51% 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.

Reported figure

Area

Zaragoza — Sulphides (UG)

Basis

100%

Ore tonnes (t)

10000.0000

Grade

1.6000

Contained (t Pb)

77.1107

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted

QA BLOCK: recomputed contained 160.0000 t Pb vs reported 77.1107029000000 t Pb (107.49% disagreement)

Reported figure

Area

Zaragoza — Sulphides (UG)

Basis

100%

Ore tonnes (t)

140000.0000

Grade

0.2000

Contained (oz)

900.2209

Classification

Resource

Source trail

• 40-F: FORM 40-F — exhibit99-1.htm (AIF exhibit)
  Table 36: Internal Mineral Resource Estimates for the Del Toro Silver Mine — Inferred

Published 2026-03-31

Verification

Approved; not independently verified · Model extracted