Haranga Resources (ASX: HAR) Advances Lincoln Gold Project with Water Treatment Online and Maiden Drilling on Track

3 min read | September 04, 2025 11:39 AM AEST | By Sonal Goyal

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Haranga Resources (ASX: HAR) Advances Lincoln Gold Project with Water Treatment Online and Maiden Drilling on Track — Image source: Company update

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Highlights

Lincoln Gold Project dewatering commenced with treatment plant fully operational and meeting discharge parameters.

Under its permits, the company is authorised to discharge up to 220 metric tonnes of treated water per day, equivalent to approximately 58,000 gallons, via its 11-acre spray field system.

Haranga is advancing preparations for its maiden underground diamond drilling program at Lincoln, which will begin once dewatering reaches the 500 level and safe access is established.

The upcoming drill program is designed to potentially deliver a JORC-compliant mineral resource estimate by the end of 2025.

Haranga Resources Limited (ASX:HAR) has reported progress at the Lincoln Gold Project, as the company advances preparations for its maiden drilling program following approval from the federal Mines Safety and Health Administration (MSHA) to commence underground work.

The company confirmed that the underground water treatment plant within String Bean Alley Decline is now fully operational, and the initial sampling of output has met discharge parameters. With these conditions satisfied, dewatering of the decline has commenced through controlled discharge from the company’s spray field system.

Water Treatment and Discharge

Under existing permits, the company is authorised to discharge up to 220 metric tonnes of water per day (approximately 58,000 gallons) through spray evaporation and percolation within an 11-acre spray field. Water released from the treatment plant is subject to continuous monitoring to ensure compliance with required standards, including pH levels between 6.5 and 8.5, sulfate concentrations below 400 mg/l, and arsenic levels under 0.1 mg/L. The discharged water met all required parameters, reaffirming the plant’s historical record of consistent performance.

Upcoming Maiden Drilling Program

Planning for Haranga’s maiden underground diamond drilling program at Lincoln is progressing well. The program is expected to commence once dewatering reaches the 500 level and safe underground access has been established. The program aims to potentially define a JORC-compliant mineral resource estimate by the end of 2025.

The project’s total indicated and inferred resources, reported in 2015 under NI 43-101 standards (not JORC compliant), stood at 286,000 ounces at 9.3 g/t Au. High-grade gold potential has been confirmed through previous due diligence drilling, which returned notable results including 3.7m at 108 g/t Au from 24.1m, with individual samples grading up to 304.5 g/t Au over 0.91m.

Broader Exploration Activities

Alongside Lincoln, Haranga continues to advance exploration across its portfolio. In July 2025, the company completed a 2,000m drilling program at the Ibel South Gold Project in Senegal and results from this program are expected over the coming months.

HAR shares were trading at AUD 0.08 per share at the time of writing on 4 September 2025.

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