Bunker Hill Mining Corp. (TSX: BNKR) (OTCQB: BHLL) is pleased to announce the production of concentrate from the new Bunker Hill Mine in Idaho’s prolific Silver Valley.

This will be the first product shipped in 45 years from a mine that produced 165 Moz of silver and 4.5 Mt of base metals before it closed in 1981, after failing to meet the world-leading US environmental laws passed in the 1970s, resulting in the loss of 2,000 local jobs. It marks a pivotal milestone for both the Silver Valley community and the business following six years of careful redevelopment, infrastructure modernization, permitting, financing, and underground rehabilitation by the revitalized Company under its new management team.

“This is a defining moment for both the new Bunker Hill and the communities of Kellogg and Wardner,” said Sam Ash, President and Chief Executive Officer. “Although we are just starting the ramp-up to commercial production – expected by the end of 2026, and a lot of work remains to be done to bring our processing system to its maximum efficiency, we are now firmly back in business, employing world-class local labour, and supplying these critical metals safely into the US domestic supply chain at a vital time for our country.”

“Over the past six years, our team, working with regulators and its many partners, has transformed Bunker Hill from a dormant, unloved asset, lying forgotten in an EPA Superfund Site into a modern mining operation, employing over 200 local staff and capable of feeding its newly built 1800tpd processing facility – the largest and most modern in the Silver Valley.”

“With our energetic exploration plan focused on bringing more higher-grade silver-lead mineralization into the mine plan, and our expanding technical team already working on ways to expand production to 2500tpd in time, the future is looking very bright for Bunker Hill and its team of dedicated Silver Valley mining professionals.”

RAMP UP TO COMMERCIAL PRODUCTION IN H2 2026

The Company expects to be at commercial production – defined as achieving 90 days at >65% of 1800tpd throughput and associated operating stability by the end of 2026.

It intends to issue its 2027 and 2028 operating guidance to the market at that time.

EXPLORATION UPDATE

The Company continues its underground exploration drilling targeting high-grade silver-lead mineralization near existing infrastructure and further refining the understanding of the Cate-8 Vein. 16 core holes have been completed for a total of 5,960 feet, all of which have hit visible galena mineralization within and outside the modeled vein zone.

An additional 28 drill holes totalling ~14k feet have been planned: 16 from the current station on the 8 Level of the Mine and 12 from a new drill station on the 7 Level to test the up-dip projection of the vein. The holes are planned to provide a drill density adequate for future mineral resource calculation, with the intention of rapidly bringing the Cate-8 Vein into the short-term mine plan and adding to the reserve base.

QUALITY ASSURANCE / QUALITY CONTROL

The Company has implemented rigorous QA/QC protocols, including the insertion of blanks and standards in all sample batches. QA samples inserted into the assay batches for the drill program to date have all passed the analyses of blanks and certified reference standards. Core sample intervals were selected based on visual geology and mineralization and were cut, bagged and delivered to the lab by Bunker Hill geologists. Samples were split and cut on a core saw where necessary, following a cut line placed by the geologist dividing visible mineralization into equal proportions.

Samples were prepared and analyzed at SVL Lab located in Smelterville, Idaho, using standard industry grind, split, and pulp preparation, followed by microwave digestion and Inductively Coupled Plasma Optical Emission Spectrometry analysis, with overlimit samples assayed by fire assay with a gravimetric finish for silver. SVL Analytical, Inc. is a full-service environmental and geochemical laboratory and holds ISO/IEC 17025 accreditation for Fire Assay and Geochemistry. SVL’s QA Program meets the quality requirements set forth in the ISO/IEC 17025:2017 Standard, as evidenced by the inclusion and reporting of internal quality control samples with all results.

QUALIFIED PERSON

Sam Bourque (AIPG CPG #11775), Chief Geologist of Bunker Hill, is the Company’s designated Qualified Person for this news release within the meaning of National Instrument 43-101. Mr. Bourque has reviewed and approved the technical information contained herein.

ABOUT BUNKER HILL MINING CORP.

Bunker Hill Mining Corp. is a U.S.-based exploration and development company focused on the restart of its flagship asset—the historic Bunker Hill Mine in northern Idaho’s prolific Silver Valley. This renowned silver, zinc, and lead deposit is being advanced using modern exploration techniques and responsible development practices to unlock its full potential.

The Company’s strategy is centered on efficiently revitalizing this high-quality asset to deliver long-term value, while upholding strong environmental and operational standards. Bunker Hill is committed to maximizing shareholder returns through the disciplined redevelopment of one of North America’s most storied mining operations.

Additional information is available at www.bunkerhillmining.com and on SEDAR+ and EDGAR.

On behalf of Bunker Hill Mining Corp.

Sam Ash
President and Chief Executive Officer

For additional information, please contact:

Brenda Dayton
Vice President, Investor Relations
T: 604.417.7952
E: brenda.dayton@bunkerhillmining.com