Metallis completes 2025 drilling program at Greyhound

Executive Summary

• Metallis Resources Inc. completed its inaugural 2025 diamond drilling program at the Greyhound property in Idaho, consisting of 11 holes totaling 1,605 meters across three targets: Bulldog, 1350, and Birdie.
• The campaign targeted previously identified prospects and intersected zones of quartz-sulphide veining with visible mineralization, including semi-massive sulphides and polymetallic sulphides.
• Initial assay results are expected to be released in November and December 2025, following QA/QC verification, to guide future exploration models.

Key Details

• Program Overview: 11 diamond drill holes totaling 1,605 meters (m) drilled across three targets: Bulldog, 1350, and Birdie. This was the first drill campaign ever conducted on the Greyhound property.
• Bulldog Target:
  • Four holes totaling 484 m drilled from two pads.
  • Targeted a 12 m wide silver-gold-antimony shear zone.
  • Historical surface samples returned up to 4.9% antimony (Sb) and 3,360 g/t silver (Ag).
  • Drilling encountered semi-massive sulphides hosted in quartz-sulphide veins containing pyrite, arsenopyrite, and trace sphalerite, galena, and stibnite.
  • Drill cuttings sampled for interpretation alongside core assays.
• 1350 Target:
  • Three drill holes totaling 660 m drilled near the Lower Rufus adit.
  • Historical channel sampling over a 36.9 m length returned 1.85 g/t gold (Au) and 785 g/t Ag.
  • Mineralized shear zone traced over 60 m vertically and 70 m horizontally.
  • Three definitive intercepts reported, providing clarity on the morphology of the shear zone.
• Birdie Target:
  • Four drill holes totaling approximately 462 m.
  • Two scissored holes drilled underneath the Upper Birdie portal.
  • Two holes drilled off a pad 50 m southeast of the Lower Birdie.
  • Trench cuts and historic adits highlight a substantial shear zone with quartz sulphide veins measuring 1 m to 3 m in width.
• Analytical Methodology:
  • Samples analyzed by ALS Labs (independent laboratory).
  • Methodology: ME-MS61 (four-acid supertrace analysis) and ME-GRA21 (fire assay with 30-gram sample and gravimetric finish).
  • QA/QC protocols include insertion of known standards and blanks.
  • Cores photographed with high-resolution cameras.
• Timeline: Assay results expected throughout November and December 2025, reported as received and verified.

Notable Quotes

• Dave Dupre, Vice-President of Exploration: "Greyhound's first drill program has been a major success, delivering a meaningful improvement in our understanding of the mineralized structures across all three tested targets. The visual results are encouraging, particularly the continuity of the shear zones and the presence of polymetallic sulphides. We look forward to receiving all the assay data, which will allow us to quantify these observations and refine our exploration model. These results will be key in guiding our geological team as we plan future drill campaigns at Greyhound."