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Highlights
- KRR has commenced a high-resolution drone-borne aeromagnetic survey across priority targets at its 100%-owned Mindoolah Gold Project.
- The UAV survey will cover approximately 9.5km², including historical open pits, underground workings and surrounding prospective areas.
- North-south flight lines at 25m spacing and low-altitude data acquisition are designed to improve detection of concealed structures and mineralised trends.
- The program aims to refine mapping of shear zones, cross-cutting faults, lithological contacts and potential alteration corridors linked to gold mineralisation.
- Fieldwork is scheduled to begin on 25 June 2026.
King River Resources Ltd (ASX:KRR) has launched a high-resolution drone-borne aeromagnetic survey across priority targets of its 100%-owned Mindoolah Gold Project in Western Australia's Murchison Province. The program is designed to identify concealed structures and potential mineralised trends within the historic goldfield.
High-Resolution Survey to Cover Historical Mining Centre
The company has engaged specialist geophysical contractor Magtech Surveys Pty Ltd to undertake the Unmanned Aerial Vehicle (UAV) aeromagnetic survey across approximately 9.5 square kilometres of the Mindoolah Mining Centre and surrounding prospective areas. Coverage will include historical open pits, underground workings and adjacent exploration targets.
The program has been designed to provide more detailed geophysical information than existing regional datasets, which have been influenced by magnetic iron formations from the nearby Weld Range. These regional signatures have limited the visibility of more subtle magnetic features associated with the Mindoolah area, especially where lithological contacts and prospective structures are concealed below weathered regolith and transported cover.
Advanced Drone Technology to Enhance Geological Mapping
The survey will be conducted using a QuSpin QTFM V2 optically pumped magnetometer operating at altitudes below 30m. The low-altitude approach and 25m spacing are expected to improve the detection of subtle magnetic variations across the project area.
The resulting dataset is intended to refine orientation of shear zones, cross-cutting faults, lithological contacts and potential alteration corridors that may not be adequately defined in existing government geophysical datasets.
Focus on Structural Controls of Gold Mineralisation
Historically, several structural orientations were observed across the Bertram, Excelsior and Cundy prospects, and historical structural mapping highlighted three dominant structural linear trends - north-east to south-west, east-west and north-west to south-east orientations.
KRR believes that the interaction of these structural trends, including cross-faults, localised dilation zones and structural intersections, may play a role in the distribution of gold mineralisation across the project.
The company noted that hydrothermal alteration linked to mineralised structures can modify magnetic minerals within host rocks, creating subtle magnetic signatures that are often difficult to detect in broader regional datasets. With the aim to identify the concealed structural features and reduce directional bias, the survey has been designed with NS flight lines with 25m spacing.
Drone Survey Replaces Deferred Helicopter Program
The UAV survey follows the temporary deferral of a previously planned helicopter-borne magnetic survey across the wider Mindoolah Gold Project area. The helicopter program, announced in May 2026, has been delayed due to third-party contractor mobilisation issues.
To maintain exploration activities in priority areas, KRR opted for a drone-based alternative that provides closer-spaced survey lines, lower-altitude data acquisition and faster deployment across the historical mining centre.
With field acquisition expected to commence on 25 June 2026 and continue for approximately five days, King River Resources is preparing to gather detailed magnetic data that could enhance its understanding of the Mindoolah Gold Project.
KRR shares were trading 9.68% higher at AUD 0.034 per share at the time of writing on 17 June 2026.
