⚒️ Southern Hemisphere Mining Limited advises that diamond drilling is progressing at its 100%-owned Llahuin Copper-Gold-Molybdenum Project in Chile with chalcocite logged at Ferro South, following the copper intercepts reported to ASX on 4 August and 1 September 2026.
- One-third of current 2,000m diamond drilling program completed with first assays pending for late November 2026
- Extension drilling in hole 24LHRD067 (241m @ 0.42% CuEq, incl. 143m @ 0.51% CuEq (ASX: 4 Aug 2026) has logged both chalcocite (Cu2S) and chalcopyrite (CuFeS2) mineralisation
- Planned circa 300m extension of DDLLA028 at Cerro focused on identifying the porphyry feeder zone using Cu isotopic analysis provided by consultant VectOres
- New copper-gold prospect added to drilling this program with an historic hole 8m @ 3.67g/t gold, from 45m with no copper assays done (RCLLA009) and field work following recent rains cutting back river banks identified chalcocite in outcrop
Southern Hemisphere Mining Chairman Mark Stowell commented:
“We’re drilling at Ferro South to test how far this copper system extends. Logging the chalcocite in 24LHRD067 is further encouragement. Chalcocite contains around 80% copper by weight, more than double chalcopyrite, and has beneficial processing qualities.
The other key test is depth/feeder zones. Extending DDLLA028 to ~650–750m is designed to test whether a feeder zone sits beneath the system utilising some of the most recent technology with VectOres.
With drilling running 24/7 and first assays due late November, we expect to add more to Llahuin’s potential before year end. A new possibly higher-grade copper-gold prospect added to the drill program provides further scope to Llahuin’s potential endowment.”
Drilling program
The initial diamond program comprises ~2,000m, designed to extend the existing Mineral Resource at the Cerro Ferro and Ferro South zones. Holes are planned ~250m to the deepest test ~650- 750m, with scope to extend the program depending on results. To date, 3 holes for 658.2m have been completed (Figure 1, Appendix 1). The rig is now moving to the deep hole at Cerro to target the feeder zone.
FIGURE 1 – see PDF.
Deeper drilling to test potential feeder zone
DDLLA028 is a historic diamond hole that ended at 401m. It will be re-entered and extended to ~650750m to test for a feeder zone for the Cerro deposit. The extension is part of the initial ~2,000m program.
The target is based on our team’s work as well as recent technological advancements using copper isotope analysis with VectOres as reported to the ASX on 30 September 2026. (Figure 2).
FIGURE 2 – see PDF.
FIGURE 3 – see PDF.
FIGURE 4 – see PDF.
FIGURE 5 – see PDF.
FIGURE 6 – see PDF.
* Sulphide Estimate 2% Chalcocite & Chalcopyrite. Cautionary Statement: Visual estimates of mineral abundance should never be considered a proxy or substitute for laboratory analysis where concentrations or grades are the factor of principal economic interest. Visual estimates may also provide no information about impurities or deleterious physical properties relevant to valuations
New Gold-Copper Target
A new gold-copper target has been identified at Llahuin with one historic hole (RCLLA009) intersecting 8m at 3.67g/t gold and not assayed for copper or any other elements.
Field work this week in the area identified significant outcrop of the possible source of this result as recent heavy rains have eroded the banks back to bedrock. (Figure 9 below). A drillhole is planned in this program to further test this target.
The historic pulps from RC drilling are held in the Company core store shed and are being sent to the laboratory for full multi-element analysis (except gold as already done).
FIGURE 7 – see PDF.
FIGURE 8 – see PDF.
Next steps
Core is cut and dispatched to the laboratory in batches. Initial assay results are expected toward the end of November 2026, based on standard laboratory turnaround times. Further results will be reported as they become available.
The Full PDF is available below.
News Release
Date: 22 October 2026 | ASX Code: SUH | Frankfurt Exchange: NK4
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Southern Hemisphere Mining Limited is an experienced minerals explorer in Chile, South America.
Chile is the world’s leading copper producing country and one of the most prospective regions of the world for major new copper discoveries. The Company’s projects include the flagship Llahuin Copper-Gold-Moly Project and the Los Pumas Manganese Project, both of which were discovered by the Company.
For the latest information about the Company – please visit our Latest News and Corporate Profile pages. We are also on LinkedIn and Twitter (X).
Competent Person Statement
The information in this announcement that relates to copper and gold exploration results for the Company’s Projects is based on information compiled by Mr Adam Anderson, who is a Member of The Australasian Institute of Mining and Metallurgy and The Australian Institute of Geoscientists. Mr Anderson has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration, and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr Anderson is a consultant for the Company and consents to the inclusion in the announcement of the matters based on his information in the form and context in which it appears.
Compliance Statement
The information in this announcement that relates to previously reported Exploration Results is extracted from announcements titled: “Diamond Drilling Commences to Test Ferro South Targets” dated 30 September 2026 “Diamond Drilling to Commence at Llahuin, Chile” dated 10 September 2026 “Further Large Zones of Copper Mineralisation – Llahuin” dated 1 September 2026 “Large Zones of Copper Mineralisation Intersected At Llahuin” dated 4 August 2026 “Amended Visible Copper Mineralisation in Ongoing Drilling” dated 10 June 2026 “Visible Copper Mineralisation Logged in Ongoing Drilling” dated 9 June 2026 “Increased JORC Resource – Llahuin Copper-Gold Project” dated 30 July 2025 “Further Drilling Results – Llahuin Copper Project” dated 18 August 2011
