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Metallurgical Testwork Completed at Hillside
Kavango Resources plc has completed a metallurgical testwork programme for its Hillside Gold Project in Zimbabwe, yielding highly positive results that indicate optimal processing parameters for a 50 tonnes-per-day carbon-in-leach plant. The testwork achieved over 95% gold recovery in ideal laboratory conditions, with real-world expectations in the 90-93% range, and demonstrated that over 91% of gold in the Bill's Luck sample was in a free-milling form. The programme also identified very low levels of elements that could negatively impact processing or increase reagent consumption, and confirmed that a grind size of 75 microns is optimal for recovery, with gravity concentration yielding up to 90% of gold in some composites. Disclaimer*
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PRESS RELEASE 20 May 2026 KAVANGO RESOURCES PLC ("Kavango" or "the Company") Hillside Metallurgical Testwork Programme Completed with Highly Positive Results Kavango Resources plc (LSE:KAV, VFEX:KAV.VX), the Southern Africa-focused metals exploration and gold production company, is pleased to announce the results from a detailed and comprehensive metallurgical testwork programme on ore samples from the Hillside Gold Project ("Hillside"), Zimbabwe. The programme achieved its objective of defining the optimal processing design, processing parameters, and reagent consumption rates for the 50 tonnes-per-day ("tpd") carbon-in-leach ("CIL") gold processing plant at Hillside, and for a future capacity upgrade. Highlights · Testwork completed on various blend compositions of Nightshift and Bill's Luck ores demonstrated high metallurgical recoveries of gold within standard processing parameters. · Very high overall metallurgical recovery of >95% achieved in ideal lab conditions, tested during the optimisation test work. Real-world conditions are expected to deliver in the 90-93% recovery range. · The Nightshift sample's gold speciation indicated 100% of the gold was native (non-refractory), whilst speciation of the Bill's Luck sample indicated 91% of the gold was in a free milling (native gold and Electrum) form. · Limited coarse gold detected in the samples tested. Gold species were very fine-grained. · Very low content of elements that could potentially act as pregnant liquor gold robbers, such as native carbon minerals, and of elements that could potentially lead to high reagent consumption, including copper and zinc. · Variability test work indicated that a target grind size of 75 microns was optimal for recovery. · Gravity recovery via centrifugal concentrators ranged from 50% to 90%. · Gravity gold concentrates can be leached via standard Intensive Leach Reactor ("ILR") technologies with up to 90% recovery after eight hours of leaching time, and 98% recovery after 24 hours of leaching time. · Required reagent and energy consumption rates to achieve high recoveries are within normal ranges. Peter Wynter Bee, Interim Chief Executive Officer of Kavango Resources, commented: "The ...
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