Rand Mining and Partners Confirm High-Grade Gold Zones in EKJV Drilling Push

East Kundana Joint Venture Advances Exploration

Rand Mining Ltd (ASX – RND), alongside Evolution Mining Limited and Tribune Resources Ltd, has reported significant exploration progress for the East Kundana Joint Venture (EKJV) during the June 2025 quarter. Situated near Kalgoorlie in Western Australia, the EKJV is a prolific gold mining region with a complex geological setting dominated by the Zuleika Shear Zone.

The joint venture partners completed a total of 10,661 metres of drilling, comprising Reverse Circulation (RC) and diamond drilling (DD) across three key prospects – Hornet, Sadler, and Ambition. This drilling campaign was designed to both define and expand mineral resources, supporting ongoing and future mining operations.

Hornet Open Pit – Preparing for Mining

At the Hornet open pit, 5,270 metres of infill RC drilling targeted the Mary Fault Zone and K2B mineralisation. The drilling results confirmed geological continuity and intersected mineralised structures consistent with the existing resource model. This work underpins the open pit mining sequence that commenced during the quarter, with resource model updates anticipated to refine mine planning.

Sadler Underground – Resource Definition Drilling

Diamond drilling at the Sadler underground prospect focused on converting Inferred Mineral Resources to the higher confidence Indicated category. Drilling was conducted on a 40m by 40m pattern from surface, targeting the upper extent of the mineralised plunge currently mined underground at Raleigh. The intersected structures and veins align well with known Sadler mineralisation, and the data will feed into an updated resource model.

Ambition Prospect – Confirming High-Grade Zones

The Ambition prospect saw 5,117 metres of combined RC and diamond drilling, with 18 drill hole results returned during the quarter. The drilling successfully confirmed a southward plunging, high-grade gold zone hosted within narrow laminated veins inside a broader shear zone. This confirmation is a critical step in defining the resource potential of Ambition, which has been historically underexplored.

Rigorous Sampling and Quality Assurance

The EKJV exploration program adheres strictly to the JORC Code 2012 standards, with detailed sampling, assay, and quality control procedures. Both RC and diamond core samples were collected, prepared, and assayed using industry-standard methods, including photon and fire assays. Quality control measures such as certified reference materials, blanks, and duplicates ensure data integrity and reliability.

Looking Ahead – Further Drilling and Model Updates

Looking forward to the first quarter of FY26, the joint venture plans to extend drilling to test the southern strike extensions of the Sadler mineralisation at Raleigh and to complete resource model updates for Ambition. These activities will be pivotal in refining resource estimates and guiding future mining strategies across the EKJV tenure.