Great Southern Mining Commences Major Drilling Program to Advance Laverton Gold Discoveries

Great Southern Mining (ASX: GSN) is set to commence a major drilling program across its Duketon and Mon Ami gold projects in the Laverton region of Western Australia.

The first phase will comprise up to 20,000 metres of reverse circulation drilling targeting growth at the emerging Golden Boulder and Amy Clarke discoveries, as well as extensions to the known Mon Ami deposit.

The program follows recent diamond drilling at Golden Boulder, where a single hole extended known mineralisation by 40m down-dip and strengthened the company’s view that the discovery has meaningful depth potential.

Significant intercepts from that hole included 2m at 1.81 grams per tonne gold from 38.5m, and 0.25m at 1.87g/t Au from 88.47m

Laverton Drilling Push

Great Southern said the campaign will be the largest program it has undertaken since acquiring the Duketon project tenure in 2021.

Golden Boulder will form a key focus, with previous drilling outlining mineralisation over 3.5km of strike that remains open along strike and at depth.

Amy Clarke will also receive follow-up drilling after shallow aircore campaigns in 2021 and 2025 delineated gold mineralisation over 4.7km of strike.

The Mon Ami work will target extensions to an existing JORC mineral resource of 1.56 million tonnes at 1.11g/t gold for 55,500 ounces.

Multiple Growth Areas

Golden Boulder sits on a north-south structural trend that hosts several gold deposits including the Rosemont, Baneygo, and Ben Hur mines now owned by Regis Resources (ASX: RRL).

The company’s upcoming work will test continuity across the northern 1.9km of the Main Line trend, extend mineralisation at depth, and infill broader-spaced drill lines across the southern 1.6km.

At Amy Clarke, drilling will test extensions at depth and along strike in higher-grade zones, with earlier results including 17m at 1.4g/t gold from 20m and 2m at 23.9g/t gold from 10m.

Mon Ami remains open to the north, north-west, and down-dip, with new holes designed to test known gold-bearing lodes and a potential repeat structure at the Blanc Platt target.

Fully Funded Campaign

Great Southern is fully funded for the planned drilling after settling the final tranche of a $4.6 million equity placement in early June.

Managing director Matthew Keane said the company was keen to return to the Duketon Gold Belt after successful late-2025 programs at Golden Boulder and Amy Clarke.

“Importantly, both are mineralised from near surface, and have only been drilled to less than 150m below surface to date,” he said.

"Great Southern’s portfolio of Western Australian gold projects presents compelling growth opportunities—the upcoming major drill program is aimed at unlocking this value by extending mineralisation in proven gold-bearing systems.”