Australian company Resolution Minerals has completed the acquisition of the Johnson Creek Tungsten & Antimony Mill and related infrastructure, along with 2,000t of tungsten ore stockpiles in Idaho, US.
This acquisition of the mill, which is located adjacent to the Horse Heaven project, supports Resolution’s push towards US production and in-house processing of antimony, tungsten and gold.
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However, the current resource estimates are classified as both a historical estimate and a foreign estimate and have not been evaluated under the Joint Ore Reserves Committee (2012) Code standards.
Historically, the Horse Heaven project contributed to US antimony supplies during major conflicts including the First and Second World Wars and the Korean War, and was mined for tungsten into the 1980s.
The company seeks to expedite production in response to rising demand for critical metals and high market prices.
The acquisition includes significant assets such as the processing mill, two historical tungsten ore stockpiles from the Golden Gate Mine, essential water rights, electrical infrastructure, and facilities for operations over approximately 25 acres of private land.
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By GlobalDataThese resources will strengthen Resolution’s downstream processing capabilities such as smelting and refining and provide a strategic base for future operations at Horse Heaven.
Additionally, the acquisition enhances the company’s ability to secure US Government funding and strategic partnerships, while creating opportunities for offtake agreements with defence and industrial sectors.
Resolution also sees expansion potential at the Golden Gate Tungsten Mine and other targets within the Horse Heaven project area through further exploration.
The Horse Heaven project spans around 59km² in the Boise National Forest, adjacent to Perpetua Resources’ Stibnite Gold Project.
Following this acquisition, Resolution plans to conduct detailed assessments of the mill’s engineering and refurbishment needs, perform metallurgical tests and processing studies on stockpiled tungsten ore, advance permitting processes, and pursue strategic partnerships and agreements.
In August 2025, the company received an unsolicited A$225m ($164.8m) offer from Snow Lake Resources for its Horse Heaven antimony-tungsten-gold-silver project.
