Andrada Mining Reports High-Grade Lithium Results at Lithium Ridge with Tin and Tantalum

• Lithium mineralisation intersected in most drill holes, with grades reaching 3.02% Li2O in selected intervals
• Mineralisation confirmed from surface to 160 metres depth across multiple pegmatite bodies
• Tin grades up to 1.98% and tantalum concentrations up to 247 parts per million recorded in drill results
• Stage 1 exploration programme comprises 14,000 metres of drilling across 120 planned holes, currently progressing on schedule
• Partnership with SQM enables project advancement through earn-in agreement for 30% interest upon completion of exploration requirements

Andrada Mining Limited (AIM: ATM, OTCQB: ATMTF) is a Namibia-based tin producer with critical minerals mining and exploration assets. The company's portfolio includes lithium, tantalum, tungsten and copper projects. Andrada's business model focuses on developing strategic partnerships to advance its Namibian resource base. The company's assets are located in Namibia, which maintains stable governance and established mining regulations. Operations target materials used in electric vehicles, solar panels and wind turbines.

High-Grade Lithium Drill Results

The initial drilling campaign at Lithium Ridge has tested 15 drill holes totalling 1,328 metres, yielding 496 samples for analysis. Results show lithium mineralisation across multiple pegmatite bodies, with spodumene identified as the primary lithium-bearing mineral. Drill hole LRD003 returned 9.63 metres grading 2.12% Li2O from 36.66 metres depth, including 5.74 metres at 3.02% Li2O. Drill hole LRD010 intersected 24.44 metres at 1.38% Li2O from 55.44 metres, with a higher-grade interval of 14.57 metres at 1.73% Li2O. Drill hole LRD011 recorded 16.81 metres at 1.51% Li2O from 68.30 metres depth.

The drilling programme used orientated diamond core drilling to determine depth extent and continuity of pegmatites within the licence area. Holes were drilled at inclined angles, with reported intersections representing apparent widths rather than true thickness.

Chief Executive Officer Anthony Viljoen stated:

"These drill results build on the recent high-grade grab sample results and show the continuity of lithium mineralisation at depth. The high-grade intersections, with results reaching up to 3.02% Li₂O, demonstrate the impressive nature of the mineralisation across the project area."

The results cover the first batch of drilling from a programme that commenced in August 2025. Drilling targets include both previously known pegmatites and recently discovered bodies identified through geological mapping. Sample preparation was conducted at SA Labs Ithuba, with geochemical analysis performed by UIS Analytical Services. Analysis used sodium peroxide fusion coupled with ICP-OES for lithium and major elements, and lithium borate fusion with ICP-MS for tin, tantalum and trace elements.

Tin and Tantalum Mineralisation

Drill results show tin and tantalum mineralisation alongside lithium within the pegmatite bodies. Drill hole LRD001 returned 2.57 metres grading 1.98% tin and 227 parts per million tantalum from 70.88 metres depth. Drill hole LRD011 intersected 0.89 metres at 1.33% tin and 247 parts per million tantalum from 88.46 metres. Multiple other holes recorded tin concentrations above 0.1% and tantalum values above 100 parts per million across various intervals.

The presence of tin and tantalum occurs within the same pegmatite intersections that host lithium mineralisation. Tin concentrations range from trace levels to 1.98%, whilst tantalum values span from below detection limits to 290 parts per million. The metals occur as accessory minerals within the pegmatite system.

Chief Executive Officer Anthony Viljoen commented:

"These results not only confirm the continuity of lithium mineralisation from surface but also showcase the substantial polymetallic potential with meaningful tin and tantalum credits that will enhance project economics."

Reported intersections exclude tin and tantalum values below defined cut-off criteria (0.1% for tin, 99 parts per million for tantalum). The analysis identifies these metals as indicators of lithium-bearing pegmatites and potential by-products in future mining scenarios. The drilling has documented the spatial distribution of all three metals across the tested pegmatite bodies, providing data for resource modelling.

SQM Partnership and Stage 1 Programme

Andrada is advancing Lithium Ridge through a partnership with Sociedad Química y Minera de Chile (SQM), structured as an earn-in agreement. Under the agreement, SQM may earn a 30% interest in the project by funding and completing the Stage 1 exploration programme. SQM is participating through its subsidiary SQM Australia (Pty) Ltd. The partnership arrangement was previously announced and is now in the execution phase.

The Stage 1 programme consists of approximately 14,000 metres of orientated diamond core drilling across 120 planned drill holes. The programme design aims to test mineralisation depth extent and continuity within both known and newly discovered pegmatites. Drilling commenced in August 2025, with the first 15 holes now complete. The programme is progressing according to the planned schedule, with geological mapping continuing to identify additional spodumene-bearing pegmatites beyond initial targets.

Technical review of the drilling data and quality assurance protocols has been completed by Professor Laurence Robb, a non-executive director with over 30 years of exploration and economic geology experience. The company has indicated it will publish regular updates as results are received and programme milestones are achieved. The remaining 105 drill holes will provide additional data on the deposit's characteristics and extent throughout the continuation of Stage 1 activities.

Programme Continuation

The Stage 1 exploration programme continues with 105 drill holes remaining from the planned 120-hole programme. Results from these holes will be released as they become available and pass quality control procedures. Ongoing geological mapping is identifying new pegmatite targets within the licence area. The company will provide updates as drilling progresses and when results meet reporting thresholds. Completion of Stage 1 requirements will determine SQM's earn-in of the 30% project interest and inform decisions regarding subsequent exploration phases.

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