⚒️ Southern Hemisphere Mining Limited is pleased to report that diamond drilling beneath previously reported RC hole 24LHRC055 (refer ASX announcement dated 28 January 2025) has intersected extensive visible copper mineralisation in the diamond tail of 24LHRD055 at its flagship 100%-owned Llahuin Copper-Gold-Molybdenum Project in Chile.

Southern Hemisphere Executive Chairman, Mark Stowell, commented:

“The visual results from the diamond tail beneath 24LHRC055 are highly encouraging and represent another important step in unlocking the scale potential of the Llahuin system.

The presence of extensive visible copper sulphides below the previously reported RC intercept demonstrates that mineralisation remains open at depth and supports our view that the Cerro-Ferro trend hosts a substantial porphyry copper system with significant expansion potential in line with the previously reported exploration target of 260 to 340Mt*.

While assays will ultimately determine the grade and economic significance of these intersections, the geological characteristics observed in the core are vectoring towards what we need to see at Llahuin.”

*Refer to SUH ASX announcement dated 30 July 2025.

View the Full PDF of the ASX Announcement
HIGHLIGHTS
  • Significant zones of visible copper sulphide mineralisation intersected in the diamond tail extension of drillhole 24LHRD055 at the Company’s 100% owned Llahuin Copper-Gold-Molybdenum Project in Chile
  • Visual logging indicates chalcopyrite-bearing veining and disseminated copper sulphides over broad intervals below previously reported mineralisation in the RC drillhole
  • Diamond drilling has successfully extended the depth of mineralisation beneath hole 24LHRC055, which previously returned 81m @ 0.53% CuEq from 2m, including 48m @ 0.62% CuEq from 30m
  • The observed sulphide and molybdenum mineralisation continues from 84m to 256m downhole which supports the Company’s interpretation of a large, vertically extensive porphyry copper system
  • Core cutting and assay sampling are underway, with laboratory results expected in the next 4-6 weeks
  • Results will assist in targeting further resource growth and defining higher-grade zones within the expanding Cerro-Ferro mineralised corridor

Figure 1: Cerro project drilling showing series 2023 and 24 holes, with diamond extension of 24LHRD055.

The diamond tail was designed to test the down-dip continuity of mineralisation below the end of the RC hole and to provide critical geological, structural and alteration information. Geological logging has confirmed multiple intervals of visible copper sulphides comprising chalcopyritedominant mineralisation associated with stockwork quartz-sulphide veining and porphyry-style alteration (Figure 2).

Figure 2: Typical disseminated chalcopyrite from 103.5m downhole in 24LHRD055* (refer to Appendix 1). *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.

The mineralisation observed in the core occurs well below the previously drilled RC section and demonstrates strong continuity of the copper system at depth. Importantly, the intensity of veining and sulphide mineralisation suggests the Company may be vectoring towards a more strongly mineralised portion of the porphyry system.

Figure 3: Plan view showing the location of 2024 RC drillholes including 24LHRC055. Holes in white are 2023 drill collars and black are historic.

Further updates will be provided in due course as assay results and analysis thereof are completed.

The Full PDF is available below.

View the Full PDF of the ASX Announcement
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:
“Increased JORC Resource – Llahuin Copper-Gold Project” dated 30 July 2025
“Higher Grade Copper & Strike Extension At Llahuin, Chile” dated 28 January 2025

News Release
Date: 9 June 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.

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