Kairos Minerals Ltd (ASX:KAI, OTCQB:KAIFF, FRA:YAJ) has wrapped up its largest drilling program to date at the Mt York Gold Project in Western Australia, setting the stage for an updated mineral resource estimate (MRE) expected in the first half of calendar 2026.
The December 2025 quarter marked the completion of a 2025 drill campaign spanning the full 4.5-kilometre strike length of the Mt York gold system, with 128 reverse circulation and diamond holes drilled for 26,971 metres. The program was finalised ahead of the Pilbara summer and focused heavily on extending mineralisation at Main Hill, Gossan Hill and Breccia Hill.
Drilling accelerated late in the quarter following the signing of a mineral rights agreement with Pilbara Minerals (PLS), allowing Kairos to test the Main Hill Extension prospect for the first time. Results from this new area are expected in February and are anticipated to feed directly into the upcoming resource update.
Oblique-section of the Mt York Gold Deposit (looking northeast). Yellow boxes are results from KAI announcement dated 23 December 2025. Historic drill results shown in white boxes. Figure shows significant grades and widths, especially at depth within the deposit.
Wide, high-grade zones reinforced
Results reported during the quarter continued to demonstrate broad zones of gold mineralisation, including higher-grade shoots at depth and along strike. Standout intercepts included:
- Main Hill: 51m at 2.42g/t gold from 54m, including 1m at 76.81g/t
- Gossan Hill: 67m at 1.92g/t gold from 140m, including 6m at 6.91g/t
- Breccia Hill: multiple intercepts confirming continuity of mineralisation within the banded iron formation host
The company said drilling has extended the ‘Monster’ zone beneath Main Hill and confirmed that mineralisation remains open at depth across the Main Trend, supporting potential for further resource growth.
Diamond drilling collar locations and results at Main Trend. Tenement M45/1306 covers the Main Trend Resource.
Importantly, the Main Hill Extension program represents the first systematic resource drilling over that prospect. Any mineralisation defined there is expected to be added directly to the Mt York MRE, currently standing at 1.4 million ounces.
Long-section of the Mt York Gold Deposit (looking north) and extension on PLS licence E45/2241 (far left of figure) from KAI announcement dated 13 November 2025 (yellow boxes). The intercepts shown are desurveyed, downhole intercepts on the projected drill string. Background image is the resource model filtered for indicated and inferred mineralisation that is >0.5 g/t Au. Note that the Main Hill Extension mineralisation on the PLS licence (far left of figure) is not included in the Kairos resource model. Drilling on PLS licence E45/2241 has been completed and awaiting assays.
Mining agreement clears path toward development
During the quarter, Kairos also signed a landmark Mining Agreement with the Nyamal Aboriginal Corporation covering the Mt York Gold Project. The agreement establishes a framework for cooperation as the project advances towards development, including cultural heritage protection, employment and contracting opportunities, and royalty-based payments once production is achieved.
Roe Hills targets lined up
Away from Mt York, Kairos advanced its Roe Hills Gold Project in WA’s Goldfields, identifying two priority prospects — Terra and Caliburn — as candidates for follow-up drilling. Both targets host broad zones of gold mineralisation and are planned to be drilled in the first half of 2026, with the aim of progressing toward a maiden resource.
Magnetic image of the southern Roe Hills project showing gold-in-drillhole results coloured by Au g/t along with significant historic drillhole results from the Terra and Caliburn prospects.
Strong balance sheet
Kairos closed the quarter with $25 million in cash after raising approximately $27 million from domestic and international institutional investors. A further $10 million payment from PLS Group is expected in early February, providing funding runway for ongoing drilling, studies and exploration programs.
With drilling complete and assays pending from the Main Hill Extension, attention now turns to compiling results ahead of the Mt York resource update — a key milestone as Kairos continues to move the project closer to development.