Heritage hits 15.57 g/t Au over 9 m at Melba project

TORONTO, ON – TheNewswire - August 26, 2026 – Heritage Mining Ltd. (CSE: HML FRA: Y66) (“ Heritage ” or the “ Company ”) further to its Visible Gold Occurrence in ML3800-003 Press Release dated July 29, 2026, and ML3800-004 Press Release dated August 20, 2026 is pleased to announce confirmation of high-grade gold mineralization within a zone comprising multiple cm to meter scale quartz-rich shear zones (Figure 1,2,3) that locally display breccia textures.

Melba Highlights:

ML3800-004: 15.57g/t Au over 9m from 43m

Including: 28.98g/t Au over 4.80m

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Figure 1: ML3800-004: 9m Mineralized Zone (True Width ~6m) ~45m to ~54m (Box 10 and 11)

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Figure 2: Melba Project – Plan View showing section line and the former Melba Mine

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Figure 3: Cross Section ML3800 Pad (ML3800-004,003)

Per the August 20, 2026 Press release: Drill hole ML3800-004 displayed the most visible gold occurrences to date, up to 2mm in size. The coarse gold occurs as disseminated grains within multiple cm to meter scale shear zones that locally display a brecciated texture. The multiple cm to meter scale shear zones were intersected obliquely, hence the zone width is exaggerated (9m) and true width (~6m). Drill holes ML3800-003 and ML3800-004 are the most recent holes testing an interpreted high-grade gold zone identified by Brett Davis in his structural evaluation of the Melba vein system (Figure 1,2,3).

“The assays result from ML3800-004 are encouraging, confirming our new structural theory. We look forward to expanding the Melba Project footprint through systematic exploration and communicating results to our stakeholders. Drilling program remains ongoing at the time o