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Highlights
- Underground works have commenced at the Lincoln Mine following MSHA approval of the Alternative Mine Rescue Plan.
- Dewatering of the decline is expected to start this week.
- Underground access enables commencement of works on the water treatment plant and independent verification of water sampling to standard.
- Drill planning and contractor engagement are well advanced and timeline for drilling to be confirmed post-dewatering
- Drill planning focuses on converting historical 286,000oz @ 9.3 g/t Au NI 43-101 resource into a JORC-compliant estimate.
Haranga Resources Limited (ASX:HAR) has announced significant progress at its recently acquired Lincoln Gold Project, as preparations ramp up for the company’s maiden underground diamond drilling campaign. Underground activities have commenced at the Lincoln Mine following the approval of the Alternative Mine Rescue Plan by the Mines Safety and Health Administration (MSHA). The approval also covered provisions for ventilation, escape and evacuation procedures.
This milestone marks a key step forward in site activities since Haranga completed the acquisition of the project in July 2025.
Dewatering to Begin This Week
With access to the String Bean Alley Decline secured, Haranga has initiated works on the water treatment plant before commencing dewatering activities, planned this week. Under the permit, discharge of up to 220 metric tonnes of water per day is allowed through percolation and evaporation at an 11-acre spray field (500m to the south of the portal entrance), provided pH, sulfate, and arsenic levels meet regulatory standards, which the plant has consistently satisfied in the past.
Independent verification of water quality standards will also be undertaken as part of the process.
With site works and drill planning well progressed, the company expects to announce the start date for underground drilling once dewatering operations are underway.
Drill Planning
The upcoming drill program will initially target the Lincoln-Comet gold resource, which hosts a historical (non-JORC) resource reported in 2015 under NI 43-101 standards of 286,000oz at 9.3 g/t Au (Indicated & Inferred).
The maiden underground diamond drilling campaign aims to convert this historical estimate into a JORC-compliant mineral resource estimate before the end of 2025.
The company stated that the high-grade mineralisation at Lincoln has already been highlighted through historical intercepts, including 3.7m at 108 g/t Au from 24.1m in DDH-0195, with individual samples grading up to 0.91m @ 304.5 g/t Au from 26.88m.
Broader Exploration Pipeline
Beyond Lincoln, Haranga continues to progress exploration across its portfolio. A 2,000m maiden drill program was recently completed at the Ibel South Gold Project in Senegal, with results expected in August 2025.
HAR shares were trading 2.56% higher at AUD 0.08 per share at the time of writing on 25 August 2025.
