Brandberg West Second Batch Drill Results

Andrada Mining Limited (AIM: ATM, OTCQB: ATMTF), a critical raw materials producer with mining and exploration assets in Namibia, is pleased to provide the final results from its inaugural drilling programme at the historical Brandberg West mine, situated within the exploration license, EPL5445. The aim of this programme is to establish an initial understanding of the grade and geology within the historical open pit area and to investigate potential mineralised extensions to the north. These results constitute the second and final batch of samples from this programme, representing ten (10) out of the twenty (20) holes drilled. (See announcement released on 12 September 2024).

Highlights

All drill holes intersected mineralisation containing the primary metals of interest, namely tin ("Sn"), tungsten ("W") and copper ("Cu"). Significant drill intersections include:

§ Drill hole AT3 04:

− 2.25 m at 0.10% Sn, 0.60% W and 1.58% Cu from 9.92 m to 12.17 m

− 2.09 m at 0.80% Sn, 1.23% W and 0.16% Cu from 47.81 m to 49.90 m

− 0.58 m at 1.75% Sn, 0.78% W and 0.24% Cu from 66.16 m to 66.74 m

− 0.66 m at 0.87% Sn, 3.53% W and 0.38% Cu from 119.12 m to 119.78 m

§ Drill hole AT3 07:

− 0.42 m at 0.50% Sn, 1.85% W and 1.28% Cu from 4.37 m to 4.79 m

− 0.31 m at 7.37% Sn, 1.04% W and 0.76% Cu from 14.50 m to 14.81 m

− 0.68 m at 2.32% Sn, 1.64% W and 0.79% Cu from 37.93 m to 38.61 m

− 0.28 m at 0.05% Sn, 1.85% W and 0.54% Cu from 50.14 m to 50.42 m

− 0.25 m at 10.55% Sn, 1.06% W and 0.17% Cu from 151.02 m to 151.27 m

§ Drill hole AT3 20:

− 0.25 m at 1.69% Sn, 0.14% W and 0.07% Cu from 23.68 m to 23.93 m

− 0.42 m at 0.69% Sn, 1.26% W and 0.38% Cu from 25.16 m to 25.58 m

− 1.37 m at 0.19% Sn, 1.54% W and 0.30% Cu from 84.09 m to 85.46 m

− 0.65 m at 1.49% Sn, 1.79% W and 0.13% Cu from 148.93 m to 149.58 m

§ Drill hole AT3 19:

− 0.34 m at 0.05% Sn, 0.06% W and 1.95% Cu from 99.03 m to 99.37 m

− 0.51 m at 1.16% Sn, 0.04% W and 0.59% Cu from 100.05 m to 100.56 m

− 4.96 m at 0.86% Sn, 0.09% W and 0.46% Cu from 140.72 m to 145.68 m

Anthony Viljoen, Chief Executive Officer, commented:

"The continuation of significant high-grade tin, tungsten and copper intersections at the Brandberg West project endorses our strategic outlook for this area and is demonstrative of the untapped value at this asset. These second batch of drill results reported grades as high as 10.55% for tin, 3.53% for tungsten and 1.95% for copper. These results also show that the mineralisation continues along strike to the Northeast.

The full exploration results will be evaluated to optimise the next exploration phase at Brandberg West. The addition of tungsten and copper to our critical metals' portfolio complements our strategy to becoming a developer of multiple critical metals to the energy transition and future technological advancements. We look forward to updating all stakeholders as we continue to develop this promising asset."

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Brandberg West

The Brandberg West project is situated within exploration license EPL 5445 in the Erongo region of Namibia. The project area is approximately 100 km from the Uis Tin Mine, Andrada Mining's flagship asset. The historical open pit mine at Brandberg West was owned and operated by Gold Fields Limited until operations ceased in the 1980's, with the cessation of exploration activities coinciding with a global collapse of the tin price.

The historical Brandberg West mine produced a tin and tungsten concentrate with secondary copper reported but never concentrated. The mineralisation occurs within multiple generations of quartz veins that trend mainly east - west in the pit and northeast - southwest further north. Most of these mineralised veins appear to be subvertical and are well exposed within the historically mined and surrounding areas. These quartz veins are hosted by metasediments of the Zebraputs Formation, with an overlying marble unit that acted as an impermeable barrier to the mineralising fluids.

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Exploration Programme

The exploration programme comprised 20 oriented Diamond Drill (DD) holes for a total of 2 975m drilled. The results of the first 10 drill holes, representing 1 471 drill meters, were previously reported (See announcement released on 12 September 2024), revealing grades of up to 4% for tin, over 2% for tungsten and typically 0.5% - 2% for copper. This announcement pertains to the remaining 10 holes, comprising 1 504 drill meters. This drill programme investigated the subsurface continuity and metal endowment of the quartz veins within the historical pit as well as the mineralised extensions identified at surface to the north. All holes were drilled at dip angles of either 60° or 45° to target the sub - vertical mineralised quartz veins. These intersections indicate apparent widths, which are greater than true widths due to the angle of intersection. This programme demonstrates that high grade mineralisation occurs within the existing pit and extends to the north.

The metals reported herein, namely Sn, W and Cu, are the primary focus of this drilling campaign. The historical operations did not produce any copper concentrate - however, because of its strong correlation with tin and tungsten, future metallurgical investigation will evaluate the recovery of all three metals. It is noteworthy that anomalous concentrations of silver and gallium were also identified in several of the analysed samples. The economic potential of these metals will be investigated as the project evolves. The results of this programme will be utilised to produce an updated geological model that will form the basis for follow-up exploration programmes. In the table below, lithology describes the dominant rock unit for each sample - in most instances where the lithology is listed as a schist the presence of smaller quartz veins or greisen have been logged as secondary units.

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Table: Mineralised drill intersections from this programme. The reported intersections were selected using a 0.2% cut off for Sn, W and Cu combined. Where multiple samples were taken from a single quartz vein, the results were combined to provide a length-weighted average grade for the vein.

Downhole orientation surveys were undertaken for each hole after drilling using a magnetic deviation probe that collected readings at two metre intervals. Collar locations were surveyed using a differential GPS. Veins that did not meet the metal content cut off criteria have not been reported as they are not currently considered to be of economic significance.

Each drill hole was geologically and structurally logged and sampled as half core. The sampling programme attempted to follow geological contacts while also maintaining consistency in data representativity. The shortest sampled length was 25cm while the longest length was limited to 125cm wherever possible.

Once sampled, the material was dispatched to the laboratory for preparation and analysis. Sample analysis was undertaken by UIS Analytical Services, a certified independent laboratory in South Africa, using a lithium borate fusion process. ICP-OES analysis was utilised for major and minor elements, whereas ICP-MS was utilised for the trace elements, including Sn, W and Cu. No top cut was applied in calculating the weighted average grades for mineralised intersections.

Figure 1: Map displaying the localities of the reported holes. Line A-A' indicates the cross section in Figure 2 below.

Figure 2: Section line A-A' displaying a projection of the drill hole AT3 07. Only selected intersections in the drill hole are labelled; the complete set of mineralised vein intersections is listed in the table above. The veins shown have been extrapolated a small distance from the drill hole and have been orientated in accordance with structural measurements from the core logs.

GLossary of Abbreviations