Green Bridge Metals' Serpentine Project: A Strategic Play in U.S. Critical Minerals

Green Bridge Metals Corporation has taken a bold step in its growth trajectory by entering a non-binding Letter of Intent (LOI) to earn up to a 70% interest in the Serpentine Project, a large-scale copper-nickel-platinum group element (PGE) deposit in Minnesota’s Duluth Complex. This move positions the company at the forefront of the U.S. government’s push to secure domestic critical mineral supplies, particularly as geopolitical tensions and energy transitions amplify demand for metals like copper and nickel. Here’s why investors should take note.

The Serpentine Project’s Potential

The Serpentine Project hosts a historical inferred resource of 277 million tonnes (Mt) averaging 0.37% copper and 0.12% nickel, with a higher-grade indicated resource of 22 Mt at 0.47% copper and 0.16% nickel. While these estimates are based on a 2020 NI 43-101 report and require validation, the project’s scale and location within the world-class Duluth Complex—a belt known for massive magmatic sulfide deposits—suggest significant upside.

The project’s infrastructure advantages are notable. Situated in Minnesota’s Mesabi Range, it benefits from immediate access to roads, railways, and power grids, and is adjacent to major deposits like the Maturi and Mesaba mines. Permits for nine new exploration drill pads have already been secured, enabling Green Bridge to advance toward a pre-feasibility study.

The LOI Terms: A Balance of Risk and Reward

Under the LOI, Green Bridge must issue $6 million in shares to Encampment Minerals and commit $25 million in exploration expenditures over two years to secure full ownership. This structure dilutes current shareholders but minimizes upfront capital risk. Crucially, the terms align with Green Bridge’s strategy of leveraging partnerships to de-risk early-stage projects.

Policy Tailwinds: U.S. Critical Minerals Strategy

The project’s timing coincides with aggressive U.S. policies to reduce reliance on foreign minerals. Executive Order 14241, signed in March 2025, prioritizes domestic mineral production, accelerating permitting and funding for projects deemed strategic. Copper, a cornerstone of renewable energy infrastructure, is explicitly highlighted in the order, and the Serpentine Project’s scale positions it as a prime beneficiary.

Risks and Validation Milestones

Investors must remain cautious. The historical resource estimates are not current NI 43-101-compliant, and the LOI is non-binding. Key risks include:
1. Resource Validation: Green Bridge must conduct independent sampling and drilling to confirm the historical data.
2. Market Conditions: Copper and nickel prices remain volatile, though long-term demand for EVs and renewables is robust.
3. Regulatory Hurdles: While federal policies favor mining, local environmental opposition or delays could arise.

The Investment Case: High Reward, High Conviction

The Serpentine Project’s 277 Mt inferred resource alone compares favorably to mid-tier copper projects globally. With the U.S. government’s support for critical minerals and Green Bridge’s technical expertise, the project could become a cornerstone asset. A successful NI 43-101-compliant report and positive drill results could catalyze a re-rating of the company’s valuation.

Conclusion: A Strategic Bet on U.S. Mineral Independence

Green Bridge Metals’ Serpentine Project is a compelling opportunity for investors willing to take on early-stage risk. With $25 million in exploration expenditures and the support of U.S. policy, the project has the potential to deliver a significant resource update in 2026. While execution remains critical, the alignment of geopolitical priorities, infrastructure advantages, and the project’s scale make this a high-conviction play on the U.S. critical minerals boom.

For now, monitor Green Bridge’s progress on permitting, drilling results, and the NI 43-101 report. Success here could turn the company into a leader in domestic copper and nickel production—a position that will only grow in value as the world shifts toward electrification and energy independence.