Great Southern Mining Limited · ASX:GSN
Great Southern Mining — Resources Rising Stars 2026
15 slides from Great Southern Mining's conference presentation, Sep 9, 2026
Slide 1: Provincial Scale Gold Exploration
Provincial Scale Gold Exploration High Impact Drilling in WA and QLD For personal use only Gold Coast September 2026 ASX:GSN
Slide 2: Important Information
Important Information Deposit Competent Person Employer Professional Institute Duketon, East Laverton and Mon Ami Exploration Results and Geological Interpretation Matthew McCarthy Great Southern Mining Limited MAIG, FSEG Edinburgh Park Project Matthew McCarthy Great Southern Mining Limited MAIG, FS
Slide 3: Aggressive company making exploration on both sides of the country
Aggressive company making exploration on both sides of the country QLD Queensland For personal use only Western Australia ~1,500km2 Edinburgh Park JV +900km2 Laverton tenure Diamond drilling underway by Major RC drill program Gold Fields Ltd at Mt Dillon commenced across 3 exciting gold targets TOWN
Slide 4: WA - Three Gold Priorities – Surrounded by Existing Mills and Infrastructure
WA - Three Gold Priorities – Surrounded by Existing Mills and Infrastructure Commanding 909km2 landholding in the Laverton District ➢ Strategically placed between Regis Resource +12Moz Duketon camp and Genesis Mining +6Moz Laverton tenure For personal use only ➢ Multiple operating and developing gol
Slide 5: Golden Boulder Discovery
Golden Boulder Discovery Drilling out 3.5km of Gold Mineralisation ➢ Golden Boulder sits on the N-W structural trend host to the Rosemont (>2.5Moz), Baneygo (380koz), Ben Hur (390koz) deposits, and multiple others For personal use only ➢ Over 50 historic workings with gold mineralisation from surfac
Slide 6: Golden Boulder Discovery: Huge Scale Potential
Golden Boulder Discovery Huge Scale Potential ➢ Drilling underway to following-up on the successful 2025 program where nearly all drill lines intercepted >1 g/t gold ➢ Historically, little to no drilling below 100m from surface ➢ Still very sparsely drilled to the south with over 400m spacing betwee
Slide 7: Amy Clarke Emerging Discovery
Amy Clarke Emerging Discovery Gold Mineralisation over a 4.7km strike ➢ 2025 drilling extended the mineralised gold trend to 4.7km, which remains open to the south ➢ Mineralisation from surface, but only drilled to an average 50m For personal use only depth below surface ➢ Located <12km from Regis R
Slide 8: Amy Clarke Emerging Discovery: Huge Scale Potential
Amy Clarke Emerging Discovery Huge Scale Potential ➢ Extensive strike with huge scale potential, but little drilling below 50m from surface ➢ Mineralisation remains open to the south where there has been no modern drilling (only shallow drilled in the 1990’s) ➢ Program completed in August 2026 with
Slide 9: Mon Ami Gold Project
Mon Ami Gold Project Extensional drilling shows growth opportunities ➢ Located ~12km east of Granny Smith (Gold Fields) processing facility ➢ Existing 1.56Mt @ 1.11g/t Au for 55koz Mineral Resource1 For personal use only ➢ Mineralisation significantly extended by recent RC program, including: ➢ 16m
Slide 10: Mon Ami Gold Project – Resource Extension
Mon Ami Gold Project – Resource Extension Recent drilling has significantly extended mineralisation down-dip, down-plunge and to the north Open For personal use only Open Figure 1. Recent drill intercepts showing extensions below the current JORC Resource. Ssection lines 6818710N (top) and 6819100N
Slide 11: Edinburgh Park
Edinburgh Park Provincial Scale – Hunting for Giant Intrusive Related Gold Systems For personal use only ASX:GSN • September 2026 10
Slide 12: Edinburgh Park JV with Gold Fields Chasing Monster Gold Deposits
Edinburgh Park JV with Gold Fields Chasing Monster Gold Deposits ➢ Over ~1,500km2 tenure - highly prospective for intrusive related mineral systems For personal use only ➢ Targeting multi-million-ounce giants ➢ Tenure accumulated over a decade, following Chairman, John Terpu’s Conquest Mining Limite
Slide 13: Mt Dillon: Potential for a concealed monster
Mt Dillon Potential for a concealed monster ➢ Mt Dillon target defined by a large-scale IP anomaly under a quartz lithocap1 For personal use only ➢ Interpreted as a preserved porphyry or epithermal system ➢ Outcropping alteration is consistent with a high-sulphidation epithermal gold system ➢ Drilli
Slide 14: Board of Directors and Corporate Snapshot
John Terpu BOARD OF DIRECTORS Executive Chairman CORPORATE SNAPSHOT Over 25 years’ experience in the mining & exploration sector, through acquisition and investment in many projects. Founder of Conquest Mining which STRONG SHAREHOLDER BASE discovered the Mt Carlton mine and went Shares on Issue1 1,1
Slide 15: Mon Ami Mineral Resource and Contact Us
For personal use only The 2021 Mineral Resource estimate for the Mon Ami Gold Project is shown below. In relation to the Mineral Resource Statement, the Company confirms that all material assumptions and technical parameters that underpin the relevant market announcement continue to apply and have n