Ontario Gold Portfolio Heats Up: Heritage Mining Reports Advances Towards Drilling (Melba), New Results, and Extends Vein Structure (Contact Bay and DBL)

Executive Summary

• Heritage Mining released extensive drill‑hole assay results from its Melba, Contact Bay and Drayton Black Lake projects, highlighting multiple high‑grade gold intercepts.
• The company submitted a diamond‑drilling permit for the Melba Project and is preparing infrastructure to mobilize a drill rig later this quarter.
• Historical bulk sample data and new drill results suggest significant near‑surface gold mineralization, supporting continued exploration and potential future resource development.

Key Details

• Melba Project
• Diamond‑drilling permit application submitted; historic mine layout validation underway.
• Trail upgrades in progress to enable rig mobilization shortly after completion.
• Planned Q4 2025/Q1 2026 program: 26 holes, ~1,780 m total depth to confirm historic high‑grade zones.
• Historic highlights include up to 23.27 g/t Au over 4.5 m and 6.59 g/t Au over 12.87 m near surface.
• Ore pile bulk sample (2012) averaged 3.99 g/t Au, estimating ~2000 short tonnes (~231 oz Au).
• Contact Bay Project
• Confirmed gold mineralization beneath the historic Rognon Mine:
  • DDH RGN25‑003: 1.47 g/t Au over 2 m from 84 m depth.
  • DDH RGN25‑004: 2.25 g/t Au over 2 m (101 m) with a higher‑grade interval of 4.31 g/t Au over 1 m; also 3.67 g/t Au over 1.28 m (109 m) including 7.56 g/t Au over 0.55 m (visible gold).
  • Additional intercepts: 0.94 g/t Au over 1.05 m, 1.09 g/t Au over 3 m, 0.69 g/t Au over 5 m, etc.
• Drayton Black Lake Project
• New drill holes extend anomalous gold values ~185 m N‑NE along a mega‑quartz vein:
  • DDH25‑016: 0.10 g/t Au over 8 m (including 0.12 g/t Au over 1 m, 0.23 g/t Au over 2 m, 0.13 g/t Au over 1 m).
  • DDH25‑016 also returned 1.03 g/t Au over 1 m at 102 m depth.
  • DDH25‑017: 0.28 g/t Au over 1 m, 0.90 g/t Au over 1 m, and 0.45 g/t Au over 2 m across various depths.
  • Results for DDH25‑018, soil orientation program, stripping program, and rock pile assays are pending.
• Qualified Person & QA/QC
• Mitchell Lavery, P.Geo, Strategic Advisor, acted as Qualified Person per NI 43‑101.
• All samples processed by ALS Canada using PhotonAssay (Au‑PA01) with rigorous chain‑of‑custody and standard QA/QC protocols; standards/blanks ≥10 % of samples.
• Forward‑Looking Statements
• The release contains forward‑looking information regarding future drilling, permit approvals, and potential resource development.

Notable Quotes

“We continue to be very impressed with the Melba Mine from historical reports… we look forward to systematically confirming historical high‑grade results in the near term and developing this project.” – Peter Schloo, President, CEO & Director

“The Contact Bay Diamond Drill Exploration program was another technical success… confirming gold mineralization around an old gold mine now needs to be incorporated into the larger picture of the project.” – Peter Schloo

“The Drayton Black Lake project diamond drilling results have been a technical success extending gold mineralization along strike. We look forward to additional geochemical program results to complement our new findings.” – Peter Schloo