Heritage Establishes First Ever Year-Round Access and Recommences Drilling, at the Melba Project

TORONTO, ON – TheNewswire - July 21, 2026 – Heritage Mining Ltd. (CSE: HML FRA: Y66) (“ Heritage ” or the “ Company ”) is pleased to announce a major infrastructure milestone at its Melba Project and recommencement of its ongoing Diamond Drill Program, located ~22km northeast from Kirkland Lake and 90km southeast of Timmins in Northeastern Ontario, Canada. For the first time in the project’s history, Heritage has upgraded approximately 5.5 km of the former winter access trail to support year-round access for diamond-drilling and exploration equipment and crews. This improvement materially enhances the Company’s ability to conduct systematic, multi-season exploration at Melba and to follow up on the property’s encouraging historical gold results without being restricted to a short winter operating window. With access improvements now completed, diamond drilling has recommenced. Drill hole ML3800-002 has been completed and assays are pending, while ML3800-003 is currently in progress. Melba Diamond Drill Program Highlights: First-ever year-round access established , following improvements to approximately 5.5 km of the historical winter trail. Year-round access is expected to improve

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