Andrada Mining has secured additional supply from a tin ore body at Goantagab in the Kunene region owned by Goantagab Mining.
The company has the option to acquire 100% of Goantagab Mining shares for US$15 million, subject to certain conditions.
Birca and Boltbroker Investments Proprietary jointly own Goantagab Mining, which serves as the operating agent on behalf of the owners of 18 mining claims located in the Goantagab area of Namibia’s Kunene Region near Khorixas.
The 18 claims, situated within Goantagab, are the source of high-grade tin ore intended to supply the Agreement.
According to Goantagab Mining’s internal, unaudited management accounts as of 12 June 2025, the company has no turnover, profits, or asset value.
High-margin feedstock
By acquiring the Goantagab ore body, Andrada Mining secures a potential source of high-margin feedstock that could significantly enhance throughput at Uis.
To unlock this value, Andrada has finalised an Ore Supply and Profit Share Agreement between its wholly owned subsidiary, Uis Tin Mining Company Proprietary Limited, and Goantagab Mining Proprietary Limited, which acts as an agent for the relevant mining claim owners. Simultaneously, Uis Tin Mining Company Proprietary Limited has entered into a Management Agreement with Birca Mining Namibia Proprietary Limited as an independent contractor to operate the recently announced additional jig plant at Uis.
Once commissioned, the 100-tonne-per-hour jig plant will ensure that processing the high-grade ore from Goantagab complements production from the existing operations at Uis.
The accelerated commissioning of the plant, combined with high-grade feedstock from Goantagab, will enable rapid production ramp-up.
Uis Tin Mining Company Proprietary Limited has also entered into an Ore Supply and Profit-Sharing Agreement with Goantagab Mining for the supply of up to 240 000 tonnes per year of high-grade ore averaging 1.5% tin.
Historical drilling
During the 1980s, Gold Fields Namibia, a subsidiary of Gold Fields South Africa Limited, conducted extensive exploration and feasibility activities in the region.
Following Namibia’s independence, the area was held under a mining license until its expiry in 2019.
Gold Fields Namibia confirmed, at the time, a non-JORC-compliant resource of tin grades greater than 1%.
Gold Fields Namibia also delineated an initial non-JORC-compliant resource at Goantagab, exceeding two million tonnes with an average grade of 0.95% tin.
The company identified higher tin-grade zones of up to 1.75%, with approximately 20,000 metres drilled to date.
The mineralised zones, with grab samples exceeding 17% tin, were also identified but not drilled, indicating further upside potential.
Pre-feasibility study
Although Andrada Mining has completed its pre-feasibility study, it has not verified this resource and cannot be relied upon; it is provided for guidance purposes only regarding the potential in the area.
Andrada Mining says there is an intention among all partners involved in this transaction to complete additional work and prepare a JORC-compliant resource for this area in due course; however, this will not delay the the delivery of ore to Uis under the Agreement.
According to Andrada Mining, the acquisition is expected to have no impact on the short-term supply of ore from the mining claims, and further updates will be provided as necessary.
Global tin potential
Andrada Mining CEO Anthony Viljoen says the collaboration with Birca on the Goantagab deposit reaffirms the company’s strategy in creating a mining district for critical minerals in the Erongo.
Viljoen also says that based on historical resource data and Andrada Mining’s independent assessment, the deposit has the potential to be compared to other high-grade occurrences of tin globally.
He says once production at the plant is fully commissioned, it will significantly increase the tin concentrate throughput, thereby elevating the company’s position in the global market.
“At Uis, construction of the new jig plant is well underway, and we remain on track to commence production in the second half of 2025.
“This ore acquisition agreement reflects the continued evolution of Andrada’s asset portfolio and our ability to forge timely and opportunistic strategic partnerships that accelerate development and enable large-scale execution,” Viljoen says.
