Full Suspension of Mining, Beneficiation and Tailings Systems at Yinman Mining; Impact on Production of Tin, Silver and Other Metals to Be Assessed

At around 15:30 on July 26, a safety incident occurred during production and construction at the underground Area 3 of Yinman Mining, a wholly-owned subsidiary of Xingye Silver&Tin, resulting in one fatality and no other injuries.

On July 28, Xingye Silver&Tin announced for the first time that the underground mining areas of Yinman Mining had been suspended, while the beneficiation plant remained in normal operation. At that time, Yinman Mining had approximately 350,000 mt of surface ore, which was expected to support the beneficiation plant's production for about two and a half months.

On July 30, Yinman Mining further received an "On-site Disposition Decision" (Xi) Yingji Xianjue [2026] No. 260 issued by the Xiwu Banner Emergency Management Bureau, requiring the simultaneous suspension of the beneficiation and tailings systems. As of the announcement disclosure, Yinman Mining's mining system, beneficiation and tailings systems had all been suspended. The previous plan to sustain beneficiation production using ore inventory could no longer be implemented, directly impacting mineral product production.

Yinman Mining has an existing mining and beneficiation capacity of 1.65 million mt per year and is the core tin-silver mine under Xingye Silver&Tin. Xingye Silver&Tin did not separately disclose Yinman Mining's actual copper metal production in 2025. According to the original project design, Yinman Mining's copper concentrates contain approximately 1,100 mt of copper metal per year; Xingye Silver&Tin's consolidated mine-produced copper output in 2025 was 2,380.89 mt. As Yinman Mining's copper production scale is relatively small, this suspension will have limited impact on China's overall supply of copper concentrates, with the impact expected to be mainly concentrated on products such as tin and silver. Going forward, attention needs to be paid to the progress of accident investigation, tailings system rectification, and production resumption acceptance.