Namibia’s Rosh Pinah Zinc Mine Commissions New SAG Mill, Doubling Throughput as Expansion Nears Completion

Appian Capital Advisory, which holds a 90% stake in Namibia’s Rosh Pinah zinc-lead mine, announced the successful commissioning of a new SAG (semi-autogenous grinding) mill, marking the completion of the final major processing component of the RP2.0 expansion project.

The new SAG mill replaces the existing ball mill and is expected to double the mine’s processing throughput from approximately 700,000 tonnes of ore per year to 1.4 million tonnes annually following ramp-up. The upgraded facility will also improve the plant’s ability to process harder ore types as mining advances deeper underground. With the SAG mill now operational, the entire RP2.0 circuit—including the new zinc flotation circuit, paste fill plant, water treatment facility, and expanded thickening and filtration systems—has been fully integrated. Appian stated that overall project construction progress has exceeded 95%, and the expansion is expected to extend mine life, improve resource utilization, and support higher zinc concentrate output in the coming years.