Exploration expands high-grade silver-lead Cate-8 vein

Exploration Expands the High–Grade Silver-Lead Cate-8 Vein Discovered in the Upper Area of the Mine KELLOGG, Idaho and VANCOUVER, British Columbia, June 01, 2026 (GLOBE NEWSWIRE) -- Bunker Hill Mining Corp.  (“ Bunker Hill”  or the “ Company ”) ( TSX: BNKR | OTCQB: BHLL ) reports further successful results from the ongoing exploration drill program testing the high-grade silver-lead Cate-8 Vein discovery adjacent to current development in the upper area of the Bunker Hill mine (the “ Bunker Hill Mine ”). Seven holes have been drilled to date for a total of 2,750 feet from the 8 Level. Assay results for the first five drillholes show significant intercepts, summarized below (results for BHE26-01 and BHE26-02 reported in the Company’s press releases dated  May 4, 2026  and  May 12, 2026 ). The last two drill holes, BHE26-06 and BHE26-07, also both intersected siderite-galena veins ranging from 1 to 6 feet in length; these holes have been logged, and samples have been submitted to the assay lab.  HIGHLIGHTS:    Exploration Target Model Estimate for Cate-8 Vein indicates a range of 50,174-167,821 tons at a grade of 9.32-5.75 oz/ton AgEq, with potential to expand through additional drilling   Drill Hole BHE26-02: 28.6ft length at 5.06 oz AgEq per ton (173.6 AgEq g/t), 280 ft from current mine development   Drill Hole BHE26-03: 15.5ft length at 11.34 oz AgEq per ton (388.79 AgEq g/t), 310 ft from current mine development   This new high-grade silver discovery suppo