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Highlights
- Resolution Minerals has appointed veteran tungsten geologist David R. Hembree to accelerate exploration at the Golden Gate mine and the Horse Heaven Project.
- Historical production averaged 1.5% WO₃, supporting potential for additional tungsten mineralisation.
- The company is nearing completion of due diligence on the strategic acquisition of the historic Johnson Creek Tungsten & Antimony Mill.
- The proposed mill transaction includes ~2,000 tonnes of tungsten stockpiles.
- Near-term work includes metallurgical testing, geophysics, and preparation for mid-2026 drilling.
Resolution Minerals Ltd (ASX:RML) (OTCQB:RLMLF) has outlined significant progress in advancing exploration and development activities at its 100%-owned Horse Heaven Gold-Antimony-Tungsten-Silver Project in Idaho, USA. The update follows a comprehensive review of historical data, engagement with a former operator of the past-producing Golden Gate Tungsten Mine, and encouraging results from recent drilling.
Appointment of Tungsten Specialist to Accelerate Progress
To fast-track exploration and development efforts, the company has engaged Mr. David R. Hembree, CPG, a highly experienced mine geologist with direct operational knowledge of the Golden Gate Tungsten Mine. He previously worked as Mine Geologist at Golden Gate in 1980 and 1981 and brings 45 years of geological experience across the western United States. In addition to being a highly accomplished explorationist, his hands-on experience as a mine geologist at several operating U.S. mines, will be a significant asset to Resolution as it moves forward with the rapid development of Horse Heaven.
The company considers Mr. Hembree’s familiarity with both the past exploration and production history of Horse Heaven to be a key asset in identifying additional tungsten resources.
Golden Gate Mine History Supports Expansion Potential
The mine produced tungsten ore intermittently between approximately 1952 and 1980. During this period, ore was originally processed at the Stibnite Mill before operations shifted to the Johnson Creek Mill, a custom plant constructed near the current Horse Heaven Project.
Historical records show consistent production grades, with tungsten mined and milled in the 1950s averaging 1.5% WO₃. Subsequent mining campaigns in the 1970s also delivered encouraging grades, and underground mining activities in 1979 and 1980 generated additional stockpiled material that remains on site.
Although drilling campaigns conducted in the 1980s and 1990s focused primarily on gold, the company believes, based on historical records, discussions with prior operators and recent drilling results, that there is potential for additional tungsten mineralisation at and around the mine.
Tungsten Market Outlook. Data source: Company update
Strategic Acquisition of Johnson Creek Mill
In parallel with exploration efforts, Resolution is progressing the proposed acquisition of the historic Johnson Creek Tungsten & Antimony Mill and the Antimony Camp properties, located on private land immediately adjacent to Horse Heaven. The acquisition includes an estimated 2,000 tonnes of tungsten ore. Due diligence is nearing completion.
The acquisition is expected to provide strategic advantages, including access to private land for processing activities, enhanced permitting flexibility, and a potential base for expanded exploration, mining and processing operations. Furthermore, the transaction is expected to position Horse Heaven as a potential hub in the US for critical metal production.
Next Steps at Horse Heaven
Near-term activities at Horse Heaven will focus on metallurgical testing of historic stockpiles, data compilation, geophysical surveys, ground-based sampling, and preparation for drilling in mid-2026.
RML shares were trading 2.60% higher at AUD 0.079 per share at the time of writing on 19 January 2026.
