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Technical Report - Galena Complex, Idaho, USA

Americas Gold & Silver · USA document official

Galena Complex Technical Report, Page | 21 Shoshone Co., Idaho 1.5 Capital and Operating Cost Estimates Capital cost for the Galena modernization project totals $45.9M (Table 1-3).

Briefing

Galena Complex Technical Report, Page | 21 Shoshone Co., Idaho 1.5 Capital and Operating Cost Estimates Capital cost for the Galena modernization project totals $45.9M (Table 1-3). Key points: Galena Complex Technical Report, Page | 21 Shoshone Co., Idaho 1.5 Capital and Operating Cost Estimates Capital cost for the Galena modernization project totals $45.9M (Table 1-3); Operating costs and sustaining capital are listed in Table 1-4 Table 1-3 Modernization Capital (AG&S 2026) Item Capital Cost $M Paste Backfill $ 11.0 #3 Shaft Hoisting Upgrades $ 1.1 Communications $ 1.1 Galena Shaft Rep; CF CF LH LH Dev Mining Cost ($/t) $242.51 $203.93 $181.88 - Processing Cost ($/t) $16.53 Site G&A ($/t) $22.05 Sustaining Capex ($/t) $27.56 NSR Cutoff ($/t) $308.65 $270.07 $248.02 $66.14 NSR Cutoff (meter-$/t) $282.23; CF CF LH LH Dev Mining Cost ($/tonne) $242.51 $203.93 $181.88 - Processing Cost ($/tonne) $16.53 Site G&A ($/tonne) $22.05 Sustaining Capex ($/tonne) $27.56 NSR Cutoff ($/tonne) $308.65 $270.07 $248.02 $66.14 NSR Cutoff; Table 21-1 Modernization Capital (AG&S 2026) Item Capital Cost $M Paste Backfill $ 11.0 #3 Shaft Hoisting Upgrades $ 1.1 Communications $ 1.1 Galena Shaft Repurposing $ 8.0 Mill Upgrades and Expansion $ 4.7 Caladay and C; 21 Table 1-4 Operating Costs, Sustaining Capital and NSR Cutoff Grade (AG&S 2026) 21 Table 2-1 List of Abbreviations .................................................................................... This brief is based on the cited source artifact and is intended as a research entry point, not a replacement for the original source or EGM canonical data tables.

Source Notes

Galena Complex Technical Report, Page | 21 Shoshone Co., Idaho 1.5 Capital and Operating Cost Estimates Capital cost for the Galena modernization...

Extractive summary evidence · source

Operating costs and sustaining capital are listed in Table 1-4 Table 1-3 Modernization Capital (AG&S 2026) Item Capital Cost $M Paste Backfill...

Extractive summary evidence 2 · source

CF CF LH LH Dev Mining Cost ($/t) $242.51 $203.93 $181.88 - Processing Cost ($/t) $16.53 Site G&A ($/t) $22.05 Sustaining Capex...

Extractive summary evidence 3 · source

CF CF LH LH Dev Mining Cost ($/tonne) $242.51 $203.93 $181.88 - Processing Cost ($/tonne) $16.53 Site G&A ($/tonne) $22.05 Sustaining Capex...

Extractive summary evidence 4 · source

Extracted Document Text

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# Technical Report - Galena Complex, Idaho, USA

Source: https://americas-gold.com/site/assets/files/5111/galena_technical_report_20260514.pdf
Fetched: 2026-05-18T08:00:15.774+00:00
Source artifact: 52712026-4edf-4414-83a7-07c43cb7c145
Normalizer input: text

## Content

5
Galena
Complex
Galena Complex
Technical Report
Shoshone County,
Idaho
Effective Date:
Qualified Person: October 31, 2025
Rick Streiff Report Date:
May 14, 2026
V.P. Exploration
Americas Gold and Silver Corp.
Page | ii Signature Page
Signature Page
The undersigned prepared this Technical Report (TR) report, titled: Galena Complex
Technical Report, Shoshone Co., Idaho, dated the 14th day of May, 2026, with an
effective date of October 31, 2025, in support of the public disclosure of Mineral
Resource and Mineral Reserve estimates for the Galena Complex. The format and
content of the TR has been prepared in accordance with NI 43-101.
Dated this May 14, 2026
(Signed) “Robert (Rick) Streiff”
Signature Robert “Rick” Streiff
Vice President Exploration
Americas Gold and Silver Corporation
Galena Complex Technical Report, Page | iii
Shoshone Co., Idaho
Table of Contents
Signature Page ..................................................................................................................................................... ii
Table of Contents............................................................................................................................................... iii
List of Tables ........................................................................................................................................................ x
List of Figures ..................................................................................................................................................... xi
1 Summary ................................................................................................................................................... 13
1.1 Executive Summary ........................................................................................................ 13
1.2 Technical Summary ........................................................................................................ 13
1.2.1 Property Description and Location ......................................................................... 14
1.2.2 Land Tenure and Ownership ................................................................................... 14
1.2.3 Physiography .......................................................................................................... 14
1.2.4 Existing Infrastructure ............................................................................................ 15
1.2.5 History .................................................................................................................... 15
1.2.6 Geology and Mineralization ................................................................................... 16
1.2.7 Mineral Resources .................................................................................................. 17
1.2.8 Mineral Reserves .................................................................................................... 18
1.2.9 Mining Methods ..................................................................................................... 19
1.2.10 Mineral Processing ................................................................................................. 19
1.2.11 Project Infrastructure ............................................................................................. 20
1.3 Markets ........................................................................................................................... 20
1.4 Environmental, Permitting and Social Considerations ................................................... 20
1.5 Capital and Operating Cost Estimates ............................................................................ 20
1.6 Conclusions ..................................................................................................................... 21
1.7 Recommendations.......................................................................................................... 21
2 Introduction ............................................................................................................................................. 23
2.1 Qualified Persons............................................................................................................ 23
2.2 Sources of Information ................................................................................................... 23
Page | iv Signature Page
2.3 List of Abbreviations ....................................................................................................... 24
3 Reliance on Other Experts.................................................................................................................. 26
4 Property Description and Location ................................................................................................ 27
4.1 Property Location ............................................................................................................ 27
4.2 Ownership ....................................................................................................................... 27
4.3 Property Description ....................................................................................................... 28
4.4 Property Parcels .............................................................................................................. 29
4.5 Environmental Liabilities................................................................................................. 31
4.6 Permits Required ............................................................................................................ 31
4.7 QP Statement .................................................................................................................. 34
5 Accessibility, Climate, Local Resources, Infrastructure, and Physiography ................... 35
5.1 Access .............................................................................................................................. 35
5.2 Climate ............................................................................................................................ 35
5.3 Local Resources ............................................................................................................... 35
5.4 Infrastructure .................................................................................................................. 35
5.5 Physiography ................................................................................................................... 36
6 History ....................................................................................................................................................... 37
6.1 Galena Mine History ....................................................................................................... 37
6.2 Coeur Mine History ......................................................................................................... 39
6.3 Caladay Property History................................................................................................. 39
7 Geologic Setting and Mineralization .............................................................................................. 40
7.1 Regional Geology............................................................................................................. 40
Galena Complex Technical Report, Page | v
Shoshone Co., Idaho
7.2 Local and Property Geology ............................................................................................ 41
7.2.1 Vitreous Quartzite .................................................................................................. 41
7.2.2 Sericitic Quartzite ................................................................................................... 42
7.2.3 Siltite-Argillite ......................................................................................................... 42
7.3 Structure ......................................................................................................................... 42
7.4 Mineralization................................................................................................................. 43
7.4.1 Vein Mineralization ................................................................................................ 44
7.4.2 Disseminated Mineralization.................................................................................. 46
7.5 Exploration Potential ...................................................................................................... 47
8 Deposit Types.......................................................................................................................................... 48
9 Exploration............................................................................................................................................... 49
9.1 Geologic Mapping ........................................................................................................... 49
9.2 Chip Samples .................................................................................................................. 49
9.3 Exploration Program ....................................................................................................... 49
10 Drilling .................................................................................................................................................. 50
10.1 Drilling progress .............................................................................................................. 50
10.2 Drilling Procedures ......................................................................................................... 50
10.3 Drilling Results ................................................................................................................ 51
11 Sample Preparation, Analysis and Security ............................................................................ 52
11.1 Channel Samples ............................................................................................................. 52
11.2 Diamond Drill Samples .................................................................................................... 52
11.3 Bulk Density Determination............................................................................................ 53
11.3.1 Measurements........................................................................................................ 53
11.3.2 Analysis of Bulk Density Measurements ................................................................ 54
11.4 Analytical Facilities ......................................................................................................... 57
Page | vi Signature Page
11.5 Sample Preparation ........................................................................................................ 58
11.6 Assaying .......................................................................................................................... 58
11.7 Quality Assurance/Quality Control.................................................................................. 59
11.7.1 Standard Reference Materials ................................................................................ 59
11.7.2 Blank Samples ......................................................................................................... 68
11.7.3 Duplicate Pulp Samples........................................................................................... 70
11.8 Summary and Recommendations for Sampling, Preparation, and Assaying ................. 71
12 Data Verification ...............

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