New woe besets British Columbia’s two biggest gold projects

British Columbia's Mining Sector Gripped by Permitting Stalemate Affecting Two Major Gold-Copper Projects

VANCOUVER, BC – April 11, 2026 – The ambitious development trajectories of British Columbia's two most significant gold projects, Seabridge Gold's colossal KSM and Tudor Gold's promising Treaty Creek, have encountered an unexpected and considerable challenge. As confirmed on Friday, April 11, 2026, the provincial government of British Columbia has effectively halted the permitting process for crucial tunnel infrastructure at Seabridge's KSM project. This regulatory pause is directly linked to an ongoing legal dispute between Seabridge Gold and its neighbor, Tudor Gold, concerning the subterranean route of these essential tunnels.

The core issue revolves around the Mitchell Treaty Tunnels (MTT), a vital component of the estimated $6.4 billion capital expenditure (CAPEX) KSM project. These twin tunnels are designed to transport ore efficiently from Seabridge’s mining operations in the Mitchell Valley to its processing facilities planned for the Treaty Valley. However, a segment of this proposed tunnel route is situated beneath claims held by Tudor Gold, igniting a contentious legal battle that has now drawn in the provincial regulatory authorities and threatens to delay both projects.

A Regulatory Roadblock for British Columbia's Flagship Gold Projects

Seabridge Gold (TSX: SEA; NYSE: SA), the operator of what is recognized as the world's largest undeveloped gold project by resources, KSM, has been actively pursuing these permits for the Mitchell Treaty Tunnels. While the company already holds several necessary permits for sections of the route, the provincial government has made it clear that it will not grant the remaining approvals as long as Tudor Gold's (TSXV: TUD) challenge against Seabridge in provincial court remains unresolved. This decision by British Columbia introduces a significant element of uncertainty into the KSM development timeline, a project that had, until recently, cleared several other substantial hurdles.

Among Seabridge's recent accomplishments for KSM was the crucial 'substantially started' designation granted by the BC government in mid-2024. This designation was pivotal, solidifying KSM’s Environmental Assessment Act permit for the entire life of the project. Furthermore, Seabridge had narrowed its extensive search for a development partner to a single contender and had achieved a minor court victory last month when Tudor Gold opted to drop one of its appeals. These developments had signaled a positive momentum for KSM, making the current permitting delay a particularly disheartening setback for the company and its investors.

The Heart of the Dispute: Mitchell Treaty Tunnels and Contested Claims

At the center of the legal contention is the entitlement of Seabridge Gold's conditional mineral reserve for KSM, initially granted in 2012. The dispute specifically questions whether this reserve instrument binds claims that predate its issuance and crucially, whether the province possesses the authority to grant tunnel-related rights across these specific pre-existing claims. Seabridge Gold has stated that the provincial ministry has, on multiple occasions, provided written confirmation that its KSM reserve does indeed apply to Tudor’s ground, asserting its legal position.

Tudor Gold, meanwhile, has been vocal for several months about its concerns, arguing that the planned tunnel route for KSM would directly impinge upon its highly prospective Goldstorm deposit and the adjacent Perfectstorm target, both integral parts of its Treaty Creek project. In October of the previous year, Tudor Gold proactively proposed a northern reroute for the tunnels, suggesting this alternative path could enable both projects to advance without conflict. By December, the company reiterated its belief that direct negotiation with Seabridge and the province represented the most effective pathway to resolution, even while pursuing court proceedings to safeguard its mineral rights, as articulated by Tudor’s president and CEO Joe Ovsenek. "We continue to believe that negotiation is the best path forward to resolve the issues for the benefit of all parties," Ovsenek stated in an October newsletter to investors. He further appealed to the BC government: "We are counting on the BC government to support the potential of Treaty Creek and not sacrifice it for the sake of KSM."

Seabridge Gold’s CEO, Rudi Fronk, countered these claims, emphasizing the company’s stance. “We have always been clear that if Tudor has an approved and permitted mine plan for its Goldstorm project, then we are willing to sit down and find an amicable solution to the Mitchell Treaty tunnels (MTT) issue,” Fronk communicated in a news release on Friday. He added, “However, agreeing to move the MTT route before Tudor has a defined project makes no sense.” As of now, Seabridge maintains that it has no intentions of commencing tunnel construction prior to the completion of a final feasibility study and the formal announcement of a project partner for KSM.

Giants in the Golden Triangle: Unrivaled Resource Potential

The sheer scale and economic potential of both the KSM and Treaty Creek projects underscore the intensity of this dispute. These operations are situated within British Columbia's prolific "Golden Triangle," a region renowned globally for its significant gold, copper, and silver endowments. The immense resource estimates associated with these projects highlight their strategic importance, not just for the companies involved, but for the entire North American mining industry and global commodity markets.

Tudor Gold’s January resource estimate for its Treaty Creek project, particularly the Goldstorm deposit, outlined an impressive mineral inventory:

• Indicated Resources: 912.3 million tonnes grading 0.85 grams per tonne (g/t) gold, 5.07 g/t silver, and 0.15% copper. This translates to a total of 24.9 million ounces of gold, 148.7 million ounces of silver, and 3.1 billion pounds of copper.
• Inferred Resources: An additional 86.1 million tonnes grading 1.43 g/t gold, 5.22 g/t silver, and 0.17% copper, contributing 4 million ounces of gold, 18.6 million ounces of silver, and 327.7 million pounds of copper.

These figures position Treaty Creek as a formidable asset, propelling Tudor Gold to plan for a preliminary economic assessment (PEA) for a 10,000-tonne-per-day underground mine at Goldstorm, expected to be completed by the third quarter of this year.

Seabridge Gold's KSM project, as the larger of the two, boasts even more staggering figures. A resource update released by Seabridge last month revealed that revised, higher metal price assumptions further enhanced its resource base without altering the underlying geological model. KSM carries:

• Proven and Probable Reserves: 2.3 billion tonnes grading 0.64 g/t gold, 0.14% copper, and 2.2 g/t silver. These reserves translate to a monumental 47.3 million ounces of gold, 7.3 billion pounds of copper, and 160 million ounces of silver.

The same study projected a robust 33-year mine life for KSM, with an anticipated average yearly output of 1.03 million ounces of gold and 178 million pounds of copper. By any measure, KSM represents a tier-one asset critical for future mineral supply, and its development is closely watched by major mining houses globally.

Corporate Stances and Strategic Maneuvers

Both companies are proceeding with their respective development plans, albeit with the shadow of the legal conflict looming. Seabridge Gold announced last month that its primary objective for the current year is to secure a definitive partner for KSM, a move essential for funding the project’s substantial CAPEX. The company remains steadfast in its position regarding the tunnel route, underlining that any alteration would require a clearly defined and permitted project from Tudor Gold.

Tudor Gold, on the other hand, is actively working on its Goldstorm PEA, a key step in demonstrating the economic viability of its own project. While pursuing negotiations, the company's decision to press ahead with court proceedings highlights its determination to protect its claims and ensure that its own project potential is not compromised by KSM's development plans.

Market Repercussions and Investor Confidence

The announcement of the permitting delay had immediate repercussions for the valuations of both listed companies. On Friday, April 11, 2026, Seabridge’s Toronto-listed shares experienced a 4.3% decline, closing at C$42.89 per share. This dip reduced its market capitalization to approximately C$4.6 billion ($3.3 billion). Tudor Gold's shares also saw a slight decrease, trading down 1% at C$0.99 by midday, resulting in a market capitalization of C$404 million ($292 million). These market reactions underscore the sensitivity of investors to regulatory and legal uncertainties, particularly for projects of such magnitude and strategic importance. The ongoing dispute could introduce significant delays, inflate costs, and potentially alter the economic models of these projects, all factors that can erode investor confidence and make securing project financing more challenging.

The Path Forward: Negotiation or Prolonged Litigation?

The current impasse presents a critical juncture for these two projects and for British Columbia's mining sector. While both companies have expressed a willingness to negotiate, their preconditions and legal strategies diverge significantly. Seabridge's reliance on the provincial ministry's written confirmations regarding its reserve rights contrasts with Tudor Gold's assertion that the tunnel route directly impacts its viable deposits.

The provincial government's decision to pause permitting highlights its role as a neutral arbiter, unwilling to make a decision that could be legally challenged or prejudice the outcome of the ongoing court proceedings. This neutral stance, while understandable from a legal standpoint, effectively places the onus on the companies to resolve their differences, either through negotiation or litigation. A protracted legal battle would undoubtedly lead to further project delays, potentially pushing back production timelines by years and escalating legal and development costs for both Seabridge and Tudor Gold. Such a scenario would also represent a missed opportunity for British Columbia to capitalize on these world-class mineral deposits amidst a global demand for gold and copper.

The resolution of this tunnel dispute is paramount not only for the economic futures of KSM and Treaty Creek but also for setting a precedent in how contiguous claims and shared infrastructure challenges are navigated in increasingly busy mining camps. All eyes will remain on the British Columbia courts and the negotiating tables as stakeholders await a clear path forward for these cornerstone projects.