Resource Upgrade at Colosseum Could De-risk Dateline’s Path to Production

Strong Drilling Results Reinforce Resource Confidence

Dateline Resources Limited has announced encouraging assay results from its recent drilling campaign at the 100%-owned Colosseum Gold and Rare Earth Element (REE) Project in California. The latest reverse circulation and diamond core drilling has confirmed the continuity of gold mineralisation beneath the existing open pit, with standout intercepts including 85.34 metres at 1.33 grams per tonne (g/t) gold and 61.26 metres at 1.18 g/t gold. These results align closely with the existing geological model and support the company’s strategy to upgrade a significant portion of the Inferred resource to the higher confidence Measured and Indicated categories.

Resource Upgrade Underpins Feasibility Study

The Colosseum deposit currently holds a JORC-2012 compliant mineral resource estimate of 27.1 million tonnes at 1.26 g/t gold, equating to approximately 1.1 million ounces of contained gold. Notably, over two-thirds of this resource is already classified as Measured and Indicated, providing a solid foundation for mine planning. The recent infill drilling program focused on increasing drill density in previously less-explored zones, successfully confirming grade continuity and thickness. This upgrade is critical as it strengthens the resource base that will underpin the Bankable Feasibility Study (BFS), which is currently underway and aims to refine mine design and enhance economic robustness.

Rare Earth Element Potential Adds Strategic Value

Beyond gold, the Colosseum project holds promising rare earth element potential due to its geological similarities with the nearby Mountain Pass mine, one of the world’s most significant rare earth deposits. While exploration for REEs is at an early stage, the proximity and comparable geology have prompted Dateline to initiate planning for drill testing this aspect of the project. This diversification could add considerable strategic value, especially given the growing global demand for rare earths in technology and clean energy sectors.

Ongoing Work and Future Outlook

Dateline Resources is continuing to receive assay results from ongoing drilling and expects to update shareholders as the JORC mineral resource update progresses. The company remains confident that the drilling program will add tangible value by expanding the high-confidence resource base and de-risking the path to production. Additionally, Dateline’s ownership of the Argos Strontium Project in the same region further diversifies its portfolio with a high-grade strontium deposit, reportedly the largest in the United States.

With a strong resource foundation and a BFS in progress, Dateline Resources is positioning the Colosseum Gold-REE Project for a potential transition to production, while also exploring the strategic rare earths opportunity that could enhance the project’s long-term value.