Looking again at a proven camp

Horizon Gold is an ASX-listed exploration and development company focused entirely on the Gum Creek Gold Project in Western Australia’s Mid-West region.

Rather than beginning with a Greenfields discovery, Horizon is working with a proven gold system that has an extensive history of mining and exploration. Gum Creek now holds a resource of 2.3 million ounces, providing a substantial foundation for its next stage of development.

The scale of the project allows Horizon to pursue several opportunities at once. Its plans combine potential open pit production with a growing focus on higher-grade underground mineralisation, supported by drilling across a wide portfolio of prospects.

For the Horizon team, the opportunity lies in applying modern geological knowledge, data and exploration methods to ground that has already demonstrated its potential.

Finding new potential beneath old workings

Recent drilling at the Omega and Kingfisher prospects has strengthened the company’s view that significant mineralisation remains to be found across Gum Creek.

At Kingfisher, drilling returned an intersection of four metres at 11.35 grams per tonne, including one metre at 42.2 grams per tonne. At Omega, Horizon has extended known mineralisation more than 120 metres down plunge.

These results are particularly significant because they sit within a gold camp that has been worked for decades. They show how advances in exploration techniques can reveal opportunities beneath and around historic mining areas that were previously overlooked.

Horizon is now undertaking an 80,000-metre drilling campaign across several prospects, with four rigs testing both shallow open pit targets and deeper underground extensions.

The program will support updated resource estimates at Kingfisher, Omega, Eagle, Goldfinch and Shrike South, while continuing to test the wider potential of the project.

A defined pathway to production

Alongside exploration, Horizon has reached a major milestone in its development pathway. In mid-2026, the company completed a Definitive Feasibility Study (DFS) for Gum Creek, outlining a 10-year mine life producing 880,000 ounces of gold, including average production of 98,000 ounces per annum across the first five years.

The DFS outlined pre-production capital costs of approximately A$350 million, an all-in sustaining cost of A$2,995 per ounce, and a pre-tax NPV₅  of approximately A$1,307 million at a 53.1 per cent internal rate of return.

The A$30 million capital raise completed in March 2026 has supported the technical, environmental, heritage and development work underpinning the DFS, and now underpins work leading into a Final Investment Decision, targeted for the second quarter of 2027, ahead of first gold production targeted for the second half of 2028.

As the work progresses, Horizon is also consulting with communities in Western Australia’s Mid-West region. The company expects its contribution to local employment and regional economic activity to grow as the project moves closer to construction and production.

Building the next chapter at Gum Creek

Horizon’s experience at Gum Creek reflects one of the enduring qualities of Australia’s gold industry. Historic production does not necessarily mean a district has revealed everything it holds.

Re-examining established gold camps requires patience, technical expertise and a willingness to challenge earlier assumptions. At Gum Creek, that work is helping Horizon grow the resource while advancing a defined pathway towards a new generation of mining.

Through its membership of the Gold Industry Group, Horizon looks forward to sharing its experience across exploration and project development while learning from producers, service providers and other companies working through similar challenges.

The Gold Industry Group warmly welcomes Horizon Gold and looks forward to following the next chapter of the Gum Creek story.

To find out more about Horizon Gold, please visit horizongold.com.au