Heritage Mining finds visible gold at Melba

Executive Summary

• Heritage Mining Ltd. confirmed the presence of visible gold in diamond drill hole ML3900-002 at its Melba project, specifically outside the interval previously reported in a February 9, 2026 press release.
• Coarse gold was identified in half-core at a depth of 73.3 metres, suggesting potential to expand the mineralized zone and exploration potential of the project.
• The discovery is located in close proximity to historic Melba mine workings within the prolific Abitibi greenstone belt, near other major producing mines.

Key Details

• Drill Hole: ML3900-002
• Location: Melba mine project, Northeastern Ontario, Canada (approx. 22 km NE of Kirkland Lake, 90 km SE of Timmins).
• Visible Gold Observation: Coarse gold identified in half-core at 73.3 metres downhole.
• Context: This interval is downhole of the previously announced interval of 42.57 grams per tonne gold over one metre from 72 metres (reported Feb. 9, 2026).
• Geological Setting: Visible gold observed at 73.3-metre depth within a sheared zone with quartz veinlets within a meta-rhyolitic volcaniclastic unit. The mineralized quartz vein array system is hosted within a silicified, brecciated meta-felsic volcaniclastic unit, proximal to a greywacke/felsic volcaniclastic contact.
• Project Scale: Approximately 3,886 hectares.
• Nearby Assets: Located near the McEwen mine (Grey Fox mine, 1 million ounces Au) approx. 22 km away, and the Ross mine (1 million ounces Au) approx. 16 km away.
• QA/QC Protocol:
  • Drill core recovered is NQ core, systematically cut in half.
  • Samples submitted to Paragon Geochemical (Timmins) for PhotonAssay analysis.
  • Paragon is ISO/IEC 17025:2017 accredited.
  • Standards and blanks account for a minimum of 10% of samples.
  • All results passed stringent quality control protocols.
• Resource Status: The company has not completed any economic evaluations, and the project currently has no resources or reserves.
• Qualified Person: Stephen Hughes, PGeo, strategic adviser for the company.

Notable Quotes

• "The identification of visible gold outside of the previous reported interval suggests potential to expand the mineralized zone and exploration potential of the Melba project. We look forward to updating our stakeholders on additional exploration results in short order," commented Peter Schloo, president, chief executive officer and director of Heritage.