Mon Ami’s Untapped Depths Pose Risk and Opportunity for GSN

Mon Ami Project Poised for Expansion

Great Southern Mining Limited (ASX: GSN) has announced plans to commence a high-impact drilling program at its wholly owned Mon Ami Gold Project in Western Australia starting April 2026. The project currently holds an Indicated and Inferred Mineral Resource of 1.56 million tonnes at 1.11 grams per tonne gold, equating to approximately 55,500 ounces of gold. Notably, the mineralisation remains open both along strike and at depth, with historical drilling having barely tested these extensions.

Strategic Location and Existing Approvals

Mon Ami benefits from a granted mining licence (M 38/1256) and a suite of environmental and operational approvals already in place, positioning it as a near-term development opportunity. Its proximity to multiple operating and planned gold processing facilities within a 50-kilometre trucking radius, including the Granny Smith Mill just 10 kilometres away, adds logistical and economic advantages. While no formal milling agreements have yet been pursued, the existing infrastructure could facilitate rapid project advancement.

Encouraging Drilling Results Highlight Depth Potential

Recent drilling results underscore the project's potential for high-grade mineralisation at depth. A standout intercept from a 2021 drill hole returned 10 metres at 2.7 grams per tonne gold from 241 metres, including 5 metres at 5.2 grams per tonne. This deep mineralisation extends the known high-grade zone down plunge by at least 700 metres and remains open for further expansion. Great Southern Mining draws a compelling parallel between Mon Ami and the nearby Ida H deposit, a historically rich underground mine that produced over 170,000 ounces at an average grade exceeding 22 grams per tonne.

Exploration Targets and Future Work

The company is advancing technical studies to prioritise drill targets, including testing for shallow repeats and parallel lodes such as the northern Blanc Platt target, where recent aircore drilling intersected encouraging gold grades. Additionally, a western offset anomaly identified through soil geochemistry and aircore drilling suggests further exploration upside. Drilling at Mon Ami will be coordinated alongside programs at Great Southern Mining’s nearby Duketon Gold Project, aiming to maximise operational efficiency.

Outlook and Market Context

With gold prices currently above A$7,000 per ounce, Great Southern Mining’s accelerated exploration at Mon Ami is well-timed to capitalise on favourable market conditions. The combination of existing resources, infrastructure, and promising exploration targets positions the project as a potentially valuable asset in the company’s portfolio. Investors will be watching closely as drilling results emerge and development studies progress.