• Broad zone of semi-massive and massive sulphide with visible pyrite, chalcopyrite and sphalerite intersected in first diamond tail
• Diamond tails successfully completing RC drillholes to their original planned target depth
• Samples from DCRD062 to be sent to lab with assay results expected in September 2025

QMines Limited is pleased to report that the first diamond tail, DCRD062, has intersected a broad zone of semi-massive and massive sulphide mineralisation at the Sulphide City deposit, part of the Develin Creek Copper-Zinc Project in central Queensland. The semi-massive and massive sulphide mineralisation comprises abundant pyrite with visible chalcopyrite and sphalerite. The intersection confirms copper-zinc mineralisation continues down-hole as expected, with the decision to switch to diamond drilling improving the results in challenging ground conditions. Hole DCRD062 was drilled using an RC precollar to approximately 154m, then completed with a diamond tail to reach the original planned target zone at depth. The change to diamond drilling was implemented after several planned RC drillholes intersected water inflows and broken ground preventing dry sample recovery. The Sulphide City drilling program is central to QMines' strategy of upgrading and expanding the Develin Creek resource base. In March 2025, the company announced an updated Mineral Resource Estimate for Develin Creek of 4.13 Mt @ 1.01% Cu, 1.16% Zn, 0.15 g/t Au, 6.0 g/t Ag.

The company aims to convert a large portion of the existing Inferred resource and Unclassified material at Sulphide City into the Indicated resource category by completing infill drilling, validate the tenor and continuity of copper and zinc grades, and test for new extensions of mineralisation outside the existing resource model, particularly at depth.