Key Highlights
- Shares traded at $0.100, up 11.11%, during the Trading session on 30 October 2026.
- Astro returned 15 metres at 1.62 g/t gold from 154 metres, including 1 metre at 20.16 g/t gold.
- Gold mineralisation has been traced over a strike extent of more than 450 metres within a 1.8 kilometre soil anomaly.
Duketon Mining Ltd (ASX:DKM) shares traded at $0.100 during the trading session on 30 October 2026, rising 11.11%. The S&P/ASX 200 (ASX:XJO) stood at 8,973.00, up 0.91% or 81.20 points at 11:15 am. Duketon is an exploration company with 100 per cent ownership of the Barlee Gold Project in Western Australia, about 200 kilometres north of Southern Cross. Its latest exploration update was released on 26 October 2026, four days before the share move, so the two are discussed separately.
Latest Development: Astro and Gromit Drilling (26 October 2026)
All assays were received from a 2,150 metre reverse circulation program of 17 holes at the Gromit and Astro prospects. At Astro, hole 26BAR045 returned 15 metres at 1.62 g/t gold from 154 metres, including 1 metre at 20.16 g/t gold, at a vertical depth of about 130 metres. The company describes this as the highest-grade result from its drilling at Barlee. Hole 26BAR040 returned 8 metres at 2.60 g/t gold from 50 metres, including 4 metres at 4.50 g/t.
Gold mineralisation at Astro now covers a strike extent exceeding 450 metres, within a broader 1,800 metre gold-in-soil anomaly identified by UltraFine soil sampling. At Gromit, 26BAR037 returned 16 metres at 0.41 g/t gold from 8 metres.
Next Steps and Soil Program
Follow-up Reverse Circulation Drilling is planned for November 2026 to test extensions at Astro and Gromit and to complete outstanding drilling at the Odie prospect. The company said UltraFine soil sampling across tenement E77/3160 is complete, with assays pending.
The company stated that the 20.16 g/t intersection was reported as one metre within a broader interval, and that the Gromit results require further geological interpretation before the most effective follow-up approach is set.
Sector Context
Gold exploration in the Yilgarn region of Western Australia is concentrated around greenstone belts, where soil geochemistry and reverse circulation drilling are typical early-stage tools. Results at this stage are usually assessed by continuity, grade and scale, and these depend on follow-up drilling and resource estimation.
Risks
The results are drilling intercepts from early-stage prospects, and no resource has been estimated for Astro. The highest-grade value is a single metre within a wider interval. Soil assays are still pending, and the company notes that the Gromit results are still being interpreted. Exploration results are subject to variation at depth and along strike.
What Lies Ahead
The company expects to receive the outstanding UltraFine soil assays and to run follow-up reverse circulation drilling in November 2026. It has also said it will submit selected resplit samples for further analysis and integrate drilling and geochemical results to prioritise exploration across the project.
The Bottom Line
Duketon's shares rose 11.11% during the 30 October 2026 session. The most recent drilling update reported gold intercepts at Astro and Gromit and an extended mineralised footprint, with further drilling and soil results to come. The next announcements will show how the mineralisation develops at depth and along strike.
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