Gateway Mining Extends Cowza Gold Mineralisation to 3.5km Strike at Yandal Project

Cowza Discovery Expands to 3.5 Kilometres of High-Grade Gold

Gateway Mining Limited (ASX:GML) has announced a significant extension to its Cowza gold discovery within the Yandal Gold Project in Western Australia. Recent wide-spaced step-out aircore drilling has pushed the continuous strike length of high-grade gold mineralisation from 2.5 kilometres to an impressive 3.5 kilometres, with mineralisation remaining open in multiple directions.

The latest assays include standout intercepts such as 4 metres at 11.1 grams per tonne (g/t) gold from 72 metres, 8 metres at 3.1g/t from 76 metres, and 4 metres at 3.3g/t from 80 metres, all demonstrating consistent mineralisation along the key mafic-intermediate volcanic contact. This zone is marked by intense demagnetisation, indicative of substantial hydrothermal fluid flow, and is structurally complex with persistent shearing, quartz veining, and silica-carbonate alteration; hallmarks of significant gold systems in the Eastern Goldfields.

Drilling to the North Suggests Further Potential Beyond Current Limits

Drilling extending approximately one kilometre north of the current assay coverage has intersected similar geological features; consistent shearing, veining, and alteration; on every drill line, although assay results are still pending. This suggests the mineralised system could extend well beyond the currently defined 3.5km strike, potentially enlarging the footprint of this emerging gold system.

Gateway is poised to accelerate its exploration efforts with a second reverse circulation (RC) rig commencing drilling this week, focusing exclusively on delineating the scale of Cowza’s mineralised footprint in fresh rock. This move aims to rapidly define the extent and continuity of high-grade mineralisation, building on the initial aircore success.

Financial Position Supports Aggressive Exploration

Gateway remains well capitalised to fund its 2026 exploration program, holding $15.7 million in cash and $5.6 million in liquid ASX-listed securities as of the end of March 2026. This financial strength provides a solid foundation for the company to pursue aggressive drilling campaigns across Cowza and other targets within the Yandal Project.

CEO Richard Pugh emphasised the significance of the findings, noting that the Cowza system’s rapid growth continues to exceed expectations. He highlighted the consistency of geological signatures across the trend and the broader 4.5-kilometre structural corridor that exhibits all the hallmarks of a major gold system. Pugh expressed confidence that Cowza represents a very large and fertile mineralised gold system, with the potential to become a significant discovery within the Yandal Project.

Next Steps in Exploration and Market Implications

With the second RC rig ramping up drilling and assays pending from northern extensions, Gateway is well positioned to provide further updates on Cowza’s scale and grade continuity in the coming months. The company’s methodical approach; combining wide-spaced aircore step-outs with targeted RC drilling; aims to rapidly unlock the full potential of this new prospect.

Given the structural complexity and hydrothermal alteration observed, the Cowza discovery aligns with other major gold systems in the region, potentially attracting increased market attention as drilling progresses. Investors will be watching closely for forthcoming assay results and resource estimates that could underpin future development decisions at Yandal.