Cosa finds 25 km conductive trend at Astro project

Executive Summary

• Cosa Resources’ Astro uranium project has identified more than 25 km of east‑northeast‑trending conductive strike length, a key target geometry associated with Tier 1 Athabasca deposits.
• The entire ZTEM survey (≈1,487 line km) was fully funded by partner Global Uranium under their option agreement, which grants Global up to an 80 % interest after five exploration stages.
• Cosa plans immediate follow‑up work—including ambient noise tomography, forward EM modelling, ground‑based EM and diamond drilling—to convert the newly defined conductive corridors into drill targets.

Key Details

• Survey Scope: Over 1,487 line kilometres of Z‑tipper electromagnetic (ZTEM) surveying flown across the Astro project.
• Conductive Trend: Approximately 25 km of continuous basement conductivity identified in the northern half of the property, aligning with a magnetic high/low break—an environment historically favorable for unconformity‑related uranium deposits.
• Exploration Significance: Conductive corridors are the primary exploration targets that host world‑class deposits such as Cigar Lake and McArthur River; their presence upgrades Astro’s prospectivity dramatically.
• Funding: Survey and associated data processing were 100 % financed by Global Uranium per the April 9, 2025 option agreement.
• Partner Agreement: Global Uranium holds an option to earn up to an 80 % interest in Astro over five exploration stages, linking financing directly to exploration milestones.
• Next Steps: Planned follow‑up programs include:
• Ambient Noise Tomography (ANT) for refined strike prioritization.
• Forward modelling of EM data and additional ground‑based EM surveys.
• Diamond drilling to test the identified conductive corridors.
• Historical Context: Only one historical drill hole (EK‑01) exists on Astro, which failed to intersect the targeted conductor; nearby historic holes (CR‑06, CR‑15) showed anomalous uranium geochemistry and hydrothermal alteration, supporting the new EM targets.
• Technical Team: Survey executed by Geotech Ltd. with real‑time QA/QC support from Condor Consulting Inc.; interpretation overseen by Andy Carmichael, P.Geo., VP Exploration (qualified person under NI 43‑101).

Notable Quotes

“This is the first time this area has received a comprehensive EM survey, and the results are encouraging… We are excited to continue advancing Astro towards inaugural drill testing with our partner Global Uranium.” – Andy Carmichael, Vice‑President Exploration, Cosa Resources.