NI 43-101 Technical Report AurMac Property Mayo Mining District, Yukon

Briefing

In 2012, AXU carried out a diamond drill program consisting of 1,275 m in 5 holes with results indicating that gold mineralization within the skarn is generally of low tenor, with local higher-grade intervals associated with later structures. Key points: In 2012, AXU carried out a diamond drill program consisting of 1,275 m in 5 holes with results indicating that gold mineralization within the skarn is generally of low tenor, with local higher-grade intervals associated; A total of 883.2 m from five drill holes which tested four targets in the Airstrip Zone while one targeted a geophysical response in the vicinity of anomalous auger sampling results, stratigraphically above the main calc; The results show that gold losses to the final leach residue were variable between the various samples, averaging 0.11 g/t Au; Production in 2023 was 1.5 Moz, 2.8 Moz in 2024 and 3.0 Moz in 2025, and Hecla continues to ramp up production to 400 t/d; Anticipated silver production for 2026 is projected to be between 2.9 and 3.2 Moz comparable to 2025 levels as outlined in a Hecla News Release dated February 17th, 2026; Mineral Resources are reported at a cut-off grade of 0.3 g/t Au, using a US$/CAN$ exchange rate of 0.73 and constrained within an open pit shell optimized with the Lerchs-Grossman algorithm to constrain the Mineral Resou. 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

In 2012, AXU carried out a diamond drill program consisting of 1,275 m in 5 holes with results indicating that gold mineralization...

Extractive summary evidence · source

A total of 883.2 m from five drill holes which tested four targets in the Airstrip Zone while one targeted a geophysical...

Extractive summary evidence 2 · source

The results show that gold losses to the final leach residue were variable between the various samples, averaging 0.11 g/t Au.

Extractive summary evidence 3 · source

Production in 2023 was 1.5 Moz, 2.8 Moz in 2024 and 3.0 Moz in 2025, and Hecla continues to ramp up production...

Extractive summary evidence 4 · source

Extracted Document Text

This is a readable excerpt of the EGM normalized Markdown text. It helps search engines and researchers understand PDF, filing, or company-document content while the original source remains authoritative.

# NI 43-101 Technical Report AurMac Property Mayo Mining District, Yukon Territory, Canada

Source: https://wp-banyangold-2026.tor1.cdn.digitaloceanspaces.com/media/2025/08/BANAUR08E_NI-43-101-Technical-Report-2026.06.26.pdf
Fetched: 2026-09-12T06:59:28.904+00:00
Source artifact: a1d4c8eb-7bfd-4639-b858-bcd9fcbee189
Normalizer input: text

## Content

# NI 43-101 Technical Report AurMac Property Mayo Mining District, Yukon Territory, Canada
TECHNICAL REPORT
AURMAC PROPERTY
MAYO MINING DISTRICT
YUKON TERRITORY, CANADA
EFFECTIVE DATE – MAY 15, 2026
REPORT DATE – JUNE 26 2026
PREPARED FOR
BANYAN GOLD CORP.
Suite 510, 1100 Melville Street QUALIFIED PERSONS COMPANY
Vancouver, BC V6E 4A6
Tysen Hantelmann P.Eng. JDS Energy & Mining Inc.
PREPARED BY Marc Jutras, P.Eng., M.A.Sc. Ginto Consulting Inc.
JDS ENERGY & MINING INC. Frank Wright, P.Eng. F. Wright Consulting Inc.
Suite 900, 999 West Hastings Street,
Vancouver, BC V6C 2W2
Date and Signature Page
This report entitled Technical Report, AurMac Property, Mayo Mining District effective as of May 15, 2026
was prepared and signed by the following authors:
Original document signed and sealed by:
Tysen Hantelmann, P.Eng. June 26, 2026
Tysen Hantelmann, P.Eng. Date Signed
Original document signed and sealed by:
Marc Jutras, P.Eng., M.A.Sc. June 26, 2026
Marc Jutras, P.Eng., M.A.Sc. Date Signed
Original document signed and sealed by:
Frank Wright, P.Eng. June 26, 2026
Frank Wright, P.Eng. Date Signed
AURMAC PROPERTY, MAYO MINING DISTRICT | TECHNICAL REPORT PAGE i
NOTICE
JDS Energy & Mining, Inc. prepared this National Instrument 43-101 Technical Report, in accordance with
Form 43-101F1, for Banyan Gold Corp. The quality of information, conclusions and estimates contained
herein is based on: (i) information available at the time of preparation; (ii) data supplied by outside sources,
and (iii) the assumptions, conditions, and qualifications set forth in this report.
Banyan Gold Corp. filed this Technical Report with the Canadian Securities Regulatory Authorities pursuant
to provincial securities legislation. Except for the purposes legislated under provincial securities law, any
other use of this report by any third party is at that party’s sole risk.
AURMAC PROPERTY, MAYO MINING DISTRICT | TECHNICAL REPORT PAGE ii
Table of Contents
1 Executive Summary ......................................................................................................................... 1-1
1.1 Introduction ............................................................................................................................. 1-1
1.2 Project Description and Ownership ........................................................................................ 1-1
1.3 History, Exploration and Drilling ............................................................................................. 1-1
1.4 Geology and Mineralization .................................................................................................... 1-2
1.5 Mineral Resource Estimate .................................................................................................... 1-3
1.6 Metallurgy ............................................................................................................................... 1-5
1.7 Conclusions and Recommendations ...................................................................................... 1-5
2 Introduction ....................................................................................................................................... 2-1
2.1 Issuer ...................................................................................................................................... 2-1
2.2 Terms of Reference ................................................................................................................ 2-1
2.3 Source of Information ............................................................................................................. 2-1
2.4 Summary of Qualified Persons ............................................................................................... 2-2
2.5 Site Visits ................................................................................................................................ 2-2
2.6 Units of Measure and Abbreviations ...................................................................................... 2-3
3 Reliance on Other Experts ............................................................................................................... 3-1
4 Property Description and Location ................................................................................................... 4-1
4.1 Property Holdings ................................................................................................................... 4-1
4.2 Property Agreements.............................................................................................................. 4-6
4.2.1 McQuesten Property.................................................................................................. 4-6
4.2.2 Aurex Property ......................................................................................................... 4-20
4.3 Land Use and Environmental ............................................................................................... 4-21
5 Accessibility, Climate, Local Resources Infrastructure and Physiography ...................................... 5-1
5.1 Project Access ........................................................................................................................ 5-1
5.2 Climate.................................................................................................................................... 5-1
5.3 Local Resources and Infrastructure ....................................................................................... 5-1
5.4 Physiography, Elevation and Vegetation................................................................................ 5-3
6 History .............................................................................................................................................. 6-1
6.1 McQuesten Claim Block Exploration History .......................................................................... 6-1
6.1.1 Island Mining and Explorations Co. Ltd (IME) 1981-1983......................................... 6-1
6.1.2 Hemlo Gold Mines Inc. (HGM) 1995 ......................................................................... 6-2
6.1.3 Eagle Plains Resources (EPR) and Miner River Resources (MRR) 1997 ................ 6-2
AURMAC PROPERTY, MAYO MINING DISTRICT | TECHNICAL REPORT PAGE iii
6.1.4 Viceroy International Exploration/Viceroy Exploration Canada (VIE/VEC)
1997-1998 ................................................................................................................. 6-2
6.1.5 Newmont Exploration of Canada Ltd. (NEM) 2000 ................................................... 6-3
6.1.6 Spectrum Gold Inc. (SPR) 2003 ................................................................................ 6-4
6.1.7 Alexco Resource Corp. (AXU) 2005 -2012 ............................................................... 6-4
6.2 Aurex Claim Block Exploration History ................................................................................... 6-5
6.2.1 Yukon Revenue Mines Ltd. (YRM) 1993-1998 ......................................................... 6-5
6.2.2 Expatriate Resources Ltd. (XPR) 1999 ..................................................................... 6-7
6.2.3 Newmont Exploration of Canada Ltd. (NEM) 2000 ................................................... 6-7
6.2.4 StrataGold Corp. (SGV) 2003-2009 .......................................................................... 6-8
6.2.5 Victoria Gold Corp. (VGCX) 2009-2016 .................................................................... 6-8
6.3 AurMac Geophysical Surveys Review ................................................................................. 6-13
6.3.1 Geophysics Compilation .......................................................................................... 6-13
6.3.2 Targeting.................................................................................................................. 6-15
6.4 Nitra Claim Block Exploration History ................................................................................... 6-19
6.4.1 Dan Klippert (DK) 1994-2002 .................................................................................. 6-19
6.4.2 Goldstrike Resources Ltd. (GR) 2011 ..................................................................... 6-25
6.4.3 Mayo Lake Minerals (MLM) 2012 ............................................................................ 6-27
6.4.4 Breakaway Exploration (BE) 2012-2013 ................................................................. 6-34
6.4.5 Taku Gold Corp. (TG) 2017 ..................................................................................... 6-34
7 Geological Setting and Mineralization .............................................................................................. 7-1
7.1 Geological Setting .................................................................................................................. 7-1
7.2 Property Geology .................................................................................................................... 7-3
7.2.1 Airstrip Zone Geology ................................................................................................ 7-3
7.2.2 Powerline Zone and Aurex Hill Zone Geology .......................................................... 7-7
7.3 Mineralization Types and Relative Temporal Relationships .................................................. 7-9
8 Deposit Types .................................................................................................................................. 8-1
9 Exploration........................................................................................................................................ 9-1
9.1 Banyan Exploration on the McQuesten Claim Block .............................................................. 9-1
9.2 Banyan Exploration on the Aurex Claim Block ..................................................................... 9-18
9.3 Banyan Exploration of the Nitra Area ................................................................................... 9-20
10 Drilling............................................................................................................................................. 10-1
10.1 Recovery............................................................................................................................... 10-7
10.2 Collar Surveys ...................................................................................................................... 10-7
10.3 Downhole Surveys ................................................................................................................ 10-7
10.4 Drilling Completed by Previous Operators ........................................................................... 10-7
AURMAC PROPERTY, MAYO MINING DISTRICT | TECHNICAL REPORT PAGE iv
10.4.1 Island Mining and Exploration Drilling (1981 and 1983) ........................................ 10-21
10.4.2 Yukon Revenue Mines Drilling (1993, 1994 and 1996)......................................... 10-22
10.4.3 Eagle Plain Resources Drilling (1997)................................................................... 10-22
10.4.4 Newmont Exploration of Canada Drilling (2000) ................................................... 10-22
10.4.5 SpectrumGold Drilling (2003a) .............................................................................. 10-23
10.4.6 StrataGold Drilling (2003b) .................................................................................... 10-23
10.4.7 Alexco Resour

[Excerpt trimmed for readability. Open the original source for the complete filing or document.]