Craig Lindsay tells InvestorNews host Tracy Hughes how drilling, two FAST-41 designations and a domestic processing strategy are advancing Resolution Minerals’ Idaho critical minerals project
Resolution Minerals Ltd. (ASX: RML | OTCQB: RLMLF) is developing an unusually broad critical minerals proposition in Idaho: a single project that combines historically mined antimony and tungsten with an emerging large-scale gold system and a potential pathway to domestic processing.
In a new InvestorNews interview, host Tracy Hughes spoke with Craig Lindsay, CEO of U.S. Operations for Resolution Minerals, about the company’s rapidly advancing, 100%-owned Horse Heaven Project. The approximately 15,000-acre property is located in Idaho’s historic Stibnite mining district and shares its eastern boundary with Perpetua Resources Corp.’s Stibnite Gold Project.
“At the 40,000-foot level, we are a critical metals story with a project in Idaho,” Lindsay said. However, the story is increasingly being defined by three complementary opportunities: high-grade antimony at Antimony Ridge, tungsten at the past-producing Golden Gate mine and a growing gold discovery at the broader Golden Gate prospect.
The most recent evidence of that scale came from the first three 2026 drill results at Golden Gate South. All three holes intersected broad gold mineralization, led by 305.7 metres grading 0.64 grams per tonne gold from surface in hole HH-GG26-003C. The result extended known mineralization at least two kilometres south of Golden Gate North, where earlier drilling returned intervals including 253 metres grading 1.50 g/t gold from surface.
Resolution had completed 33 diamond holes totalling approximately 9,700 metres when the latest results were released, with a substantial assay pipeline still ahead. The company’s 2026 program contemplates up to 13,700 metres across as many as 45 holes and is intended to test the scale and continuity of gold and tungsten mineralization across Golden Gate North and South.
Lindsay described the gold system as a potentially important “backstop” to the critical minerals strategy. Resolution is targeting a maiden Mineral Resource Estimate in the first quarter of 2027, subject to successful exploration results. Until that work is completed, Golden Gate’s scale remains an exploration thesis, but the length and width of the reported intersections have given the market considerably more geological evidence with which to assess it.
Antimony Ridge provides a different kind of opportunity. Historic trenches exposed very high-grade stibnite mineralization that was mined during the First World War, Second World War and Korean War. More recent surface sampling has returned assays as high as 48.7% antimony and 890 g/t silver, reinforcing the target’s potential at a time when the United States is seeking secure domestic sources of antimony for defence and industrial uses.
Golden Gate also hosts a past-producing underground tungsten mine that operated intermittently from approximately 1952 to 1980, with reported production grades ranging from 1.5% to 2.0% tungsten. Resolution has acquired the nearby Johnson Creek Mill site and associated historic stockpiles. A 93.6-kilogram composite sample from those stockpiles returned 1.85% tungsten trioxide, with scheelite identified as the predominant tungsten-bearing mineral.
The strategic value of Horse Heaven is therefore not confined to what may be in the ground. Resolution is also attempting to address what Lindsay called the U.S. “processing chokehold.” The company is evaluating both pyrometallurgical and hydrometallurgical routes for antimony and has brought in specialist metallurgical expertise to advance the work.
Initial conventional processing test work has already produced an intermediate containing 99.38% antimony trioxide. The company’s stated goal is to establish an antimony processing hub in Idaho, with the Johnson Creek site offering private land, power, water and existing infrastructure adjacent to Horse Heaven. Work on a potential tungsten processing solution is also progressing.
“One of the biggest challenges in the United States is there’s no domestic production, but it’s this processing chokehold that’s out there,” Lindsay told Hughes. “That’s what the U.S. government is really interested in—a processing solution.”
Federal engagement has become another defining feature of the company’s strategy. Both Antimony Ridge and Golden Gate have received FAST-41 Transparency Coverage, placing the two development targets within a federal framework intended to improve the coordination, transparency and timeliness of infrastructure permitting reviews. The designations do not constitute project approvals, but they give Resolution a clearer federal process as it advances exploration and development plans.
Resolution has also been accepted into the U.S. Defense Industrial Base Consortium (DIBC), giving it access to defence supply chain initiatives, industry partners and potential funding opportunities. The company has submitted a funding application related to its tungsten strategy and is assessing additional opportunities for antimony.
Alongside the technical and government work, Resolution is pursuing greater access to U.S. capital. The company currently trades in Australia and on the OTCQB and is working toward a Nasdaq listing. Lindsay said the deeper U.S. capital markets and growing interest in domestic critical minerals could broaden the company’s investor base as drilling and metallurgical results continue to emerge.
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