Metalsource Mining Expands Silver Hill Exploration Footprint with Multiple Open IP Targets Across 2.4 Kilometres of Strike

About this update from Metalsource Mining Inc.

Property-scale survey identifies multiple priority drill targets analogous to the geophysical signature associated with known mineralization, supporting systematic step-out drilling and the potential expansion of America's first silver mine. Vancouver, British Columbia--(Newsfile Corp. - June 17, 2026) - Metalsource Mining Inc. (CSE: MSM) (OTCQB: MSMMF) (FSE: E9Z) ("Metalsource" or the "Company") is pleased to announce the results of a comprehensive induced polarization ("IP") geophysical survey at its flagship Silver Hill Project in North Carolina. The property-scale survey has identified multiple priority exploration targets along approximately 2.4 kilometres of strike and is expected to play a key role in guiding future step-out drilling as the Company works to expand the footprint of America's first silver mine and evaluate its broader exploration potential. Current drilling and geological interpretation indicate that mineralization extends approximately 550 metres below surface and remains open in multiple directions. The newly identified IP anomalies complement this growing geological model by providing additional priority targets to guide future exploration and evaluate potential extensions of the system beyond the areas drilled to date. Durango Geophysical Operations mobilized to the Silver Hill Project in November 2025 and completed approximately 7 line kilometres of ground induced polarization ("IP") surveying, comprising a combination of 100-metre, 50-metre and 25-metre pole-dipole ("PLDP") configurations over an interpreted strike length of approximately 2.4 kilometres. The survey identified multiple on-strike IP polarization anomalies, which are currently the subject of an ongoing follow-up program. In addition, 50-metre and 100-metre PLDP data, together with magnetotelluric ("MT") data, are being integrated into the Company's exploration model to support near-term drill targeting. Initial interpretation of the 25-metre PLDP data indicates: Historically, exploration at Silver Hill was concentrated around the existing mine workings. Today, Metalsource is combining an aggressive diamond drilling program with detailed, property-scale geophysical surveys and advanced geological modeling to evaluate the broader mineralized system. Current drilling results, coupled with IP data...

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