Sky Metals builds a clearer path from Tallebung exploration to development

Tallebung moves closer to development

Sky Metals Limited (ASX:SKY) ended FY2026 with its flagship Tallebung tin-tungsten-silver project looking less like a conventional exploration story and more like an emerging development proposition. More than 500 drill holes had been completed by 30 June, compared with 115 holes supporting the previous Mineral Resource Estimate, while drilling continued to extend shallow mineralisation to the south-east, east and north-east.

The company reported numerous high-grade intercepts across the year, including 21 metres at 0.75% tin from 27 metres in hole TBRC263, 23 metres at 1.14% tin from 19 metres in TBRC395 and 34 metres at 0.27% tin, 0.03% tungsten and 57.7 grams per tonne silver from 39 metres in TBRC428. These are exploration results rather than a guarantee of mine performance, but Sky says they support the grade continuity and open-pit potential of the deposit.

That drilling campaign fed into an updated resource released after year end, while the annual report records a further step in the development process: Tallebung entered the Environmental Impact Statement phase of NSW’s State Significant Development approvals pathway. The company says baseline work covering biodiversity, groundwater and geochemistry is continuing alongside stakeholder engagement and permitting studies.

Ore sorting could reshape the processing plan

The most striking technical result came from bulk ore-sorting trials. A 75-tonne sample was upgraded from 0.17% tin to 2.32% at more than 94.8% tin recovery in the first sorting stage, with over 93% of feed mass rejected. A second stage lifted the product to 10.8% tin at more than 70% recovery. Silver was also upgraded tenfold, from 7.44 grams per tonne to 75.9 grams per tonne, with more than 80% recovery.

Those results point to a potentially smaller downstream processing task and, in the company’s view, the possibility of lower future capital and operating costs. The caveat is important: the bulk material came from weathered near-surface zones and included a high proportion of fines. Tungsten recovery from those fines remains under review through dense-medium separation work, followed by pilot-scale gravity processing intended to produce a final tin concentrate for potential off-take discussions.

Doradilla adds a second tin development option

Sky is also trying to turn Doradilla into more than a satellite asset. Testwork on a historical drill-core interval recovered approximately 78% of tin into a saleable concentrate grading about 45% to 55% tin. The company has also outlined an Exploration Target of 10 million to 15 million tonnes grading 0.32% to 0.42% tin over 2.5 kilometres of a broader mineralised corridor exceeding 10 kilometres.

That target is not a Mineral Resource and is based on limited geological information, so further drilling will be needed before its scale or economic relevance can be tested. Even so, the metallurgical result gives Sky a second project with a defined route toward a marketable product, while planned work will focus on historical high-grade intersections, surface-sampling extensions and systematic drilling.

Strong funding year, but no operating revenue

The balance sheet improved sharply after two placements, including a A$6.1 million raising at A$0.065 a share and a A$20.5 million placement at A$0.155. Sky finished June with A$3.59 million in cash and A$14 million in term deposits, or A$17.6 million in immediately available and near-term funds. That provides room for the next phase of drilling, metallurgy and approvals, although the company explicitly says it does not generate cash from operations and will require additional funding as projects move toward development.

The financial cost of the transition was a A$5.37 million net loss, up from A$3.15 million a year earlier. The result included a A$1.66 million write-down of exploration expenditure on projects where the board has not currently planned further exploration, while Tallebung and Doradilla accounted for most of the A$24.85 million capitalised exploration balance at year end. After June, Sky said its Tallebung pre-feasibility study confirmed a technically robust and economically attractive near-term development opportunity, but the next test is whether that proposition can survive permitting, pilot processing and the scale of capital required to build a mine.