Updates on Bunker Hill Mining's Significant Progress in 2025

Bunker Hill Mining Corp. Progress Update

KELLOGG, Idaho and VANCOUVER, British Columbia — Bunker Hill Mining Corp. (TSX-V: BNKR | OTCQB: BHLL) is excited to share a comprehensive update regarding the notable strides made in the first half of 2025. Recently, the corporate team has collaborated effectively with strategic partners to finalize a transformative equity and debt restructuring deal. Meanwhile, a streamlined team in Idaho has taken significant steps to advance the construction of the project, bringing us closer to a sustainable restart of the Bunker Hill Mine.

Significant Construction Milestones Achieved

Throughout the complex financial restructuring process, we have continued to push forward towards a safe, sustainable, and profitable restart of the Bunker Hill Mine, anticipated in the first half of 2026. According to Sam Ash, President and CEO, the project construction is currently 67% complete, with procurement status at an impressive 98%. We have begun stockpiling payable ore, and financing costs have decreased substantially, thereby enhancing our projected cash flow margins.

Commitment to Safety and Environmental Standards

Despite a temporary slowdown in development to conserve resources, the dedicated Idaho team has made remarkable headway in constructing the processing plant and carrying out key underground developments. Safety remains our top priority. We are proud to report zero lost-time incidents year-to-date while effectively managing environmental impact through safe discharge of mine water, assisting local operations.

Advancements In Underlying Mining Operations

• Underground Rehabilitation: The rehabilitation of a critical 2,000m ramp connecting various mining levels has been completed, enhancing access to ore zones.
• Completion of Key Underground Facilities: A new underground powder magazine has been successfully built, supporting mining operations.
• Extraction Progress: Active development in the Newgard ore body has yielded payable ore, generating stockpiles to support the commissioning process.

Moving Forward with Construction and Engineering

The processing plant is now 83% complete; all mechanical installations are finalized, paving the way for an expedited electrical system set-up. Phased commissioning is expected to begin later this year. In this period, we are constructing a new Tailings Filter Press, aimed at efficiently managing our operations and significantly advancing project milestones.

Exploration Initiatives to Boost Mining Efficiency

Our geologists are focusing on improving existing reserves and exploring high-grade silver zones in anticipation of increasing mining efficiency at restart. Keystones of our exploration efforts include:

• Targeting High-Grade Silver Zones: Drifting toward identified high-grade silver zones is set to enhance our early production capacity and operating margins.
• Identifying Promising Exploration Targets: The allocation of resources towards previously recognized anomalies is crucial for maximizing our operational success.

Strategic Financing Outcomes Present Opportunities

In June 2025, we completed a $31 million equity financing and debt restructuring effort, marking a pivotal moment in our company’s evolution. This initiative included:

• Substantial Capital Injection: Participation from Teck Resources Limited has significantly bolstered our equity, providing a robust foundation for our ongoing operations.
• Debt Improvement: Through conversions, we achieved a notable reduction in total debt, strengthening our capital position.

Future Goals and Strategic Initiatives

The latter half of 2025 will emphasize:

1. Securing remaining project finance and optimizing existing offtake agreements.
2. Advancing project completion towards 90% and gearing up for operational activities by early 2026.
3. Conducting a resource update incorporating newly identified silver resources in the upper mine.
4. Working on a NYSE American listing application to increase our investor exposure and trading liquidity.

Frequently Asked Questions

What is the current status of the Bunker Hill project?

The Bunker Hill project is currently 67% complete, with procurement at 98%, and is on track for a sustainable restart in early 2026.

What safety measures has Bunker Hill implemented?

Bunker Hill has maintained zero lost-time incidents year-to-date and has effectively managed environmental impacts during project advancements.

How has strategic financing impacted Bunker Hill?

The recent $31 million equity financing and debt restructuring have improved our financial foundation, aiding in project development and operational risk management.

What are Bunker Hill's future goals?

Future goals include completing the project safely, preparing for operational ramp-up, and pursuing a NYSE American listing to enhance market presence.

Who can I contact for more information regarding Bunker Hill?

For inquiries, please reach out to Brenda Dayton, Vice President of Investor Relations at 604.417.7952 or via email.

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