Alphamin Resources (TSXV: AFM) has lowered its full-year tin production forecast by 12% to 17,500 tonnes due to recent conflict-related disruptions at its Bisie mine in eastern Democratic Republic of Congo.
Tin output in the first quarter of 2025 dropped 18% to 4,270 tonnes, compared to 5,237 tonnes in Q4 2024, and total ore processed fell 31% to 160,274 tonnes, the company reported Thursday.
The decline follows a temporary halt in operations in March after Rwanda-backed M23 rebels advanced into the nearby town of Walikale. After the mine suspension, tin prices surged as much as $37,100 per tonne on the London Metal Exchange (LME), their highest level since June 2022, before easing to $36,280 per tonne. Tin sat at $30,800 per tonne on Thursday.
Shares of Alphamin Resources fell 1.2% to 82¢ by midday Thursday, for a market capitalization of C$1.07 billion ($760 million).
Bisie, which contributes roughly 6% of the world’s tin supply, resumed processing stockpiled ore this week after rebels withdrew from the area. Alphamin noted that underground mining operations are expected to restart later this month.
Last year, the mine produced about 17,300 tonnes of tin.
The conflict in eastern Congo has intensified in recent months, with M23 rebels capturing several key areas, including the regional capital Goma, a critical logistics hub for mining operations.

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