Alphamin Resources has entered an agreement to provide a portion of its tin concentrate production from the Bisie mine in the Democratic Republic of Congo (DRC) to Nathan Trotter in the US.
The Bisie tin mine is located about 60km northwest of Walikale Centre and 180km northwest of Goma, the capital of the North Kivu Province.
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The arrangement will allocate up to 3,600t of contained tin per year, or around 20% of Bisie’s annual production target, for an initial period of two years.
Nathan Trotter is currently completing the construction of its smelting facility in the US.
The new supply deal will help support this facility’s operations by securing a source of high-grade tin concentrate from Alphamin’s Bisie mine, which currently produces about 20,000t of contained tin annually.
Alphamin’s decision to diversify its customer base follows its recent acquisition by International Resource Holding (IRH), an investment company based in the UAE.
The company stated that supplying Nathan Trotter aligns with its strategy to support the development of tin refining capacity within western markets and to reduce concentration in global tin supply chains.
The initiative is also linked to the Pax Silica framework, launched in December 2025 by the US.
This programme aims to secure supply chains for critical minerals and technologies.
Alphamin noted that IRH, which holds a majority stake in the company, supports the new agreement.
The support of the DRC government and international partners, including the US government, has been cited as important to the ongoing success of the Bisie mine.
In April 2025, Alphamin Resources announced it had begun a phased resumption of operations at its Bisie tin mine.
The company made the decision after insurgents withdrew from the area around the site, creating a more secure environment for mining activities.
