Australian mining company Resolution Minerals has finalized the acquisition of the Johnson Creek Tungsten and Antimony Mill and associated infrastructure in Idaho, United States. The transaction includes 2,000 tonnes of tungsten ore stockpiles and positions the company to advance domestic production of critical minerals. Located adjacent to Resolution’s Horse Heaven project, the tungsten mill acquisition represents a strategic move toward establishing in-house processing capabilities for antimony, tungsten, and gold.
The acquisition encompasses the processing mill facility, two historical tungsten ore stockpiles from the Golden Gate Mine, water rights, electrical infrastructure, and operational facilities spanning approximately 25 acres of private land. According to the company, these assets will support downstream processing operations including smelting and refining activities at the site.
Strategic Response to Critical Minerals Demand
Resolution Minerals is pursuing expedited production in response to escalating demand for critical metals and elevated market prices. The Horse Heaven project holds historical significance, having previously supplied antimony to United States forces during the First World War, Second World War, and Korean War. Tungsten mining operations at the site continued into the 1980s before ceasing.
However, current resource estimates at the property are classified as both historical and foreign estimates that have not been evaluated under the Joint Ore Reserves Committee 2012 Code standards. The company will need to conduct updated assessments to verify these resources according to current industry standards.
Enhanced Capabilities and Strategic Positioning
The tungsten mill acquisition strengthens Resolution’s downstream processing capabilities and provides critical infrastructure for future Horse Heaven operations. Additionally, the transaction enhances the company’s position to secure United States government funding and forge strategic partnerships with defense and industrial sectors. The company anticipates opportunities to negotiate offtake agreements with these strategic partners.
Meanwhile, Resolution has identified expansion potential at the Golden Gate Tungsten Mine and other exploration targets within the broader Horse Heaven project area. The project spans approximately 59 square kilometers in the Boise National Forest, situated adjacent to Perpetua Resources’ Stibnite Gold Project.
Next Steps for Johnson Creek Mill Development
Resolution Minerals plans to conduct comprehensive assessments of the mill’s engineering requirements and refurbishment needs following the acquisition. The company will perform metallurgical testing and processing studies on the stockpiled tungsten ore to optimize recovery methods. Advancing permitting processes represents another priority as the company works toward restarting operations.
In contrast to the company’s development plans, Snow Lake Resources submitted an unsolicited offer of A$225 million (approximately $164.8 million) for Resolution’s Horse Heaven antimony-tungsten-gold-silver project in August 2025. The report indicates this proposal values the entire project rather than solely the mill infrastructure.
The company has not announced specific timelines for completing mill assessments or commencing production operations. Regulatory approvals and the completion of metallurgical studies will likely determine the project development schedule in coming months.
