Silver Tiger Reports Progress on Northern and Southern Vein Exploration Programme

• Northern Veins drilling scheduled for Q4-2025 following completion of mapping and sampling programme 
• Channel sampling returned 672 g/t silver equivalent over 0.5 metres on Fundadora Vein 
• 25 kilometres of vein strike length mapped, representing 50% of project area 
• Southern Veins remain undrilled with over 10 kilometres of mapped strike length 
• Underground PEA expected Q3-2025

Silver Tiger Metals Inc. (TSXV:SLVR) is a Canadian mining development company focused on precious metals projects in Mexico. The company holds full ownership of a 28,414-hectare mining district encompassing the historic El Tigre property in Sonora state.

The company's development activities began at El Tigre in 2017, accumulating extensive drilling programmes totalling over 150,000 metres. Resource definition work has progressed through multiple mineral resource updates, culminating in economic studies including a preliminary economic assessment and prefeasibility study. The prefeasibility analysis indicates project economics of US$222 million after-tax net present value with 40% internal rate of return.

Exploration Programme Details

The 2025 Summer Exploration Programme targets Northern Veins located 2 kilometres north of the historic El Tigre Mine and Southern Veins including Lluvia de Oro, La Mancha, and El Toro areas. Northern Veins contain over 10 kilometres of combined strike length across Fundadora, Protectora, and Caleigh veins, with 15% of mapped strike length currently drill-tested.

Exploration crews are mapping and sampling historic underground workings to define drill targets. The process involves cataloguing historic adits and drifts, followed by LiDAR drone scanning. Glenn Jessome, President & CEO, stated the Northern Veins "show the same structure, mineralogy, grades and orientations as the well-defined veins around the historic El Tigre Mine."

Current work consists of chip sampling across vein faces at 3-5 metre intervals along tunnel lengths. Sample weights range from 3-5 kg with minimum lengths of 0.50 metres. The programme will continue through summer 2025 to prepare targets for Q4 drilling.

Technical Results and Data

Recent channel sampling from Northern Veins returned notable intersections. Fundadora Vein samples yielded 476 g/t silver equivalent over 1.6 metres, including 672 g/t silver equivalent over 0.5 metres. Additional results include 118 g/t silver equivalent over 0.8 metres from another Fundadora location.

Historical drilling data shows consistent vein intersections across the area. Previous results include 1,616 g/t silver equivalent over 1.1 metres from Fundadora Vein and 2,748 g/t silver equivalent over 3.15 metres from Caleigh Vein. The Protectora Vein returned 197 g/t silver equivalent over 8.4 metres, including 2,049 g/t silver equivalent over 0.5 metres.

Quality control procedures include systematic insertion of certified standards, blanks, and duplicates. Samples are processed at Bureau Veritas in Hermosillo, Mexico, using fire assay for gold and total digestion ICP for silver and multi-elements. All results have passed the company's QA/QC protocols.

Development Status and Milestones

The company reports progress on both open pit and underground development tracks. The technical team and P&E Mining are completing the underground PEA, expected in Q3-2025, focusing on high-grade Vein, Sulfide, and Shale Zones. Process flow design and costing are in progress with initial capital and operational expenditures established.

For open pit development, Silver Tiger has engaged Kappes, Cassiday & Associates for detailed engineering studies and WSP for preliminary heap leach and pond engineering. The company states it is preparing for a construction decision on the open pit portion.

The next phases include continued Northern Veins exploration through summer 2025, Q4 drilling commencement, and Southern Veins evaluation at Lluvia de Oro, La Mancha, and El Toro areas. The company plans to increase mapping coverage from current 50% to 70% of the project area.

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