What did Southern Hemisphere Mining (ASX:SUH) announce regarding the Llahuin Copper Project?

Southern Hemisphere Mining has commenced an expanded 1,000-metre diamond drilling programme at its 100% owned flagship project in central Chile. The campaign targets three key prospects—Ferro South, Ferro Central, and Cerro—to test for extensions of known mineralisation.

Why is Southern Hemisphere Mining (ASX:SUH) switching from RC to diamond drilling?

The company is transitioning to diamond drilling because previous reverse circulation (RC) drilling was prematurely halted by groundwater ingress. Diamond drilling rigs allow the technical team to penetrate deeper and more effectively through these challenging geological conditions.

What is the current resource size of the Llahuin Copper Project?

The Llahuin Copper Project currently hosts a JORC-compliant resource of 218 million tonnes. This resource consists of a copper, gold, and molybdenum porphyry system that spans a three-kilometre strike.

What are the primary targets of the new drilling campaign at Llahuin?

The programme focuses on three specific prospects: Ferro South, Ferro Central, and Cerro. Drilling is designed to explore both lateral (horizontal) and vertical (depth) extensions of high-priority mineralisation zones identified in previous sessions.

How might this news affect the investment thesis for Southern Hemisphere Mining (ASX:SUH)?

The commencement of deeper drilling shifts the thesis toward high-reward exploration, as success could significantly increase the project's total copper equivalent tonnes.

What does this drilling programme mean for the company's long-term strategy?

This initiative reflects management’s focus on unlocking additional value from its most substantial asset through systematic exploration rather than just maintaining the status quo. By owning 100% of the project, SUH retains all the upside of any new discoveries made during this campaign.

Southern Hemisphere expands diamond drilling at Llahuin Project

Written by Liezl GambePublished May. 6 2026Last Updated May. 6 2026

Southern Hemisphere Mining (ASX:SUH) commenced an expanded diamond drilling programme at its flagship Llahuin Copper Project, located in the mineral-rich region of central Chile.

The initiative aims to further delineate and expand the current 218-million-tonne JORC-compliant resource, which consists of a copper, gold, and molybdenum porphyry system spanning a three-kilometre strike.

The company, which maintains 100% ownership of the project, is focusing its technical efforts on unlocking additional value from this substantial asset through a targeted and systematic exploration campaign.

The newly launched programme is scheduled to cover approximately 1,000m of diamond drilling across three primary prospects: Ferro South, Ferro Central, and Cerro.

The drilling phase is designed to explore lateral and vertical extensions of high-priority mineralisation zones.

The targets were identified during previous reverse circulation drilling sessions that were prematurely halted due to groundwater ingress.

By utilising diamond drilling rigs, the technical team can now penetrate deeper and more effectively through these challenging geological conditions to provide a more comprehensive understanding of the ore body's potential.

The transition from RC to diamond drilling represents a critical step in verifying the continuity of the copper-gold system at depth.