The United States has taken an important step towards its goal of reducing foreign dependence on minerals critical to national security. The Stibnite Gold Mine in Idaho, which produced vital minerals for the “Arsenal of Democracy” during World War II, was reactivated in partnership with the US Army and Perpetua Resources Inc. The Stibnite Gold Project aims to strengthen the US domestic supply chain by extracting not only gold, but also antimony sulphur, a critical component of ammunition production.
Antimony Crisis and the Minerals Monopoly
Antimony is a critical mineral used in the manufacture of all types of ammunition, fire protection materials, metal strengthening, defence optics, night vision goggles and batteries. in the 1940s, the United States, which self-supplied most of its antimony production, obtained most of its supply from the Stibnite mine. However, in the post-war period the mine was closed and the last domestic production ceased in 2001.
In the following years, the United States became completely dependent on foreign sources for antimony supplies. This situation created a critical weakness in the national defence industry, especially as it created a monopoly over the mineral. Besides China, which has at least 2% of the world’s antimony supply, Russia and Tajikistan are among the leading suppliers. The imposition of antimony export restrictions by the government in August put US defence manufacturers under direct pressure.
Noting the importance of the Stibnite project, JPEO A&A and Picatinny Arsenal Commander Major General John T. Reim said,“The Stibnite project currently has the largest identified antimony reserve in the United States. With an estimated 148 million pounds, it is one of the largest antimony reserves outside of foreign control,” he said. The Pentagon warned that China and Russia’s control of the market could jeopardise US national security.
Mining and Environmental Restoration
The Stibnite Gold Project is expected to contribute not only to the defence industry, but also to environmental restoration. 19. in the 20th and early 20th centuries, tailings, a by-product of mining, plugged the Salmon River and especially interfered with the breeding migration of native salmon.
Perpetua Resources expects the project to meet 5 per cent of US demand for antimony during its first six years of operation, while also committing to clean up environmental damage. The company aims to restore the river for the benefit of the salmon population and clean up the environmental damage left by previous generations of miners with modern technologies.
With the mine operational, Stibnite is expected to become a safe, reliable and domestic source of military-grade antimony sulphur for the US defence industry. Major General Reim stated that this initiative is in line with the Army’s “Ground-to-Ball” guaranteed ammunition strategy and serves the purpose of “finding domestic sources for critical materials as we modernise and strengthen the Arsenal of Democracy”. This move also supports a strategy in line with the signing by President Trump and Australian Prime Minister Anthony Albanese of a co-operation agreement against the Australian monopoly on critical minerals.
