London-listed critical minerals miner Andrada Mining said tin concentrate production at its Uis Mine increased by 14% to 429 tonnes during the quarter ended November 2025, up from 376 tonnes in the same period last year.
Contained tin production rose by 10% to 255 tonnes.
Tin recovery remained stable at 73%, exceeding the company’s internal target of 70% for the third consecutive quarter.
According to the company’s quarterly update, its Continuous Improvement programme, known as CI2, continued to deliver measurable gains at the Uis Mine in Namibia. Processing throughput increased by 12% year on year to 146 tonnes per hour, while total ore processed rose 8% to 259,396 tonnes.
Tin shipments increased to 15 during the quarter, a 25% rise compared with the previous quarter, as Andrada sought to optimise sales into a tightening global market. Tin prices have risen by about 40% year to date, exceeding US$40,000 per tonne in December 2025.
“The quarter reflected continued progress at Uis, with improved throughput, consistent recoveries and strong tin production, all underpinned by a favourable pricing environment. The benefits of our continuous improvement programme and development initiatives are beginning to materialise, creating visible momentum across the business,” chief executive officer Anthony Viljoen said.
Quarterly tin production was marginally lower than in the previous quarter due to scheduled maintenance and CI2 implementation downtime on the crushing circuit. Andrada said these activities were necessary to support long-term plant stability and performance. Plant availability stood at 91%, while utilisation was recorded at 90%.
Tantalum production declined during the quarter, with concentrate output falling to 7.7 tonnes and contained tantalum decreasing to 789 kilograms. The company attributed the decline to lower recovery rates and ongoing optimisation across product streams.
“These initial results provide a positive indication of the latent value within our operations that we aim to unlock as we progress further into the new year, and further demonstrate the quality of the geology at Uis. With tin prices exceeding US$40,000 per tonne in early December, the commodity has emerged as one of 2025’s top performers,” Viljoen said.
On the development front, commissioning of the new jig processing plant continued under a phased approach. Initial start-up challenges related to fines build-up and shaking table configuration are being addressed in collaboration with equipment manufacturers.
Until third-party ore becomes available, the jig plant will continue to process Uis ore to optimise performance.
Andrada said it remains encouraged by the long-term potential of high-grade ore supply from Goantagab and is optimistic that an outcome can be reached to enable implementation of the existing supply agreement.
At the same time, the company is pursuing additional third-party ore partnerships to expand feedstock options.
In lithium development, Andrada is advancing metallurgical test work and offtake discussions for petalite production at Uis, with study results expected in the second half of 2026.
Exploration at the Lithium Ridge joint venture with SQM accelerated during the quarter, including the deployment of a third drill rig. Initial assay results are expected in the first half of 2026.
“As the only tin producer listed on AIM, Andrada is uniquely positioned to benefit from the current bull market. In parallel, our exploration and development activities across the broader Erongo region continue to validate our strategy to develop a hub for tin and associated critical minerals, including lithium, tantalum, copper and tungsten,” Viljoen said.
