Bunker Hill on Track for June Restart. Provides Corporate Update and Commissioning Progress

About this update from Bunker Hill Mining Corp

Bunker Hill on Track for June Restart. Provides Corporate Update and Commissioning Progress KELLOGG, Idaho and VANCOUVER, British Columbia, April 15, 2026 (GLOBE NEWSWIRE) -- Bunker Hill Mining Corp. (“Bunker Hill” or the “Company”) (TSX: BNKR | OTCQB: BHLL) is pleased to provide a corporate update highlighting continued and safe progress toward the restart of the Bunker Hill Mine (the “Project”) in Idaho’s Silver Valley anticipated in June 2026. “As our growing team continues to execute safely to plan, we remain on track for the restart of Bunker Hill mine in June, delivering critical metal into the U.S. metals supply chain and creating U.S. mining jobs at a vital time,” said Sam Ash, CEO and President. COMMISSIONING PROGRESS AND PATH TO PRODUCTION The Company continues to advance commissioning across key circuits, with recent activities focused on mill, filter plant and systems testing, representing important milestones in the transition from construction to operations. These efforts are designed to validate system performance, optimize throughput, and further de-risk the Project ahead of initial production. Bunker Hill remains focused on a disciplined, methodical commissioning process, with sequential system activation and testing proceeding in line with internal expectations. Figure 1: Tailings Filtration Press – April 7, 2026 MINING METHOD UPDATE Bunker Hill will access all underground mining areas via the enlarged and refurbished Russell Portal adjacent to the Mining Camp located above Warder. This portal is the gateway to a newly built internal ramp which extends 3 kilometers from the portal entrance on the 4 Level down to the 9 Level and the Kellogg Tunnel, providing efficient vehicle access to these upper levels for mechanized mining. The mining team intends to use longhole stoping as its primary underground mining method. This proven and efficient bulk mining technique is well-suited to the geometry and continuity of the deposit. It enables the extraction of larger ore blocks with a high degree of mechanization, ensuring high productivity, lower unit costs, and enhanced safety. The average stope size will be 6 meters (“m”) (width) x 12 m (height) x 30 m (length). The Company’s mine plan incorporates modern design and sequencing to optimize ore recovery whi...

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