Chalice Mining Outlines Definitive Timeline for Gonneville Development

Chalice Mining shifts focus to detailed engineering and environmental approvals for its Gonneville PGM project, outlining a clear 2028 investment decision timeline and sparking a 12% stock rally.

Chalice Mining Ltd. has entered a pivotal new stage for its flagship Gonneville project, shifting its focus from preliminary studies to detailed engineering and environmental approvals. This transition marks the beginning of the critical path toward a final construction decision, a phase closely watched by equity holders.

Strategic Shift Toward Execution

The company is now intensifying efforts to refine technical processes and mitigate potential risks within the planned production workflow. A key component of this phase involves advancing detailed engineering plans concurrently with comprehensive environmental modeling. Chalice Mining’s strategic use of its own land holdings near Perth is intended to streamline future infrastructure needs, an approach designed to establish a foundation for long-term operational stability.

This progress comes amid growing global demand for diversified sources of platinum group metals (PGMs). With worldwide supply heavily concentrated in few regions, a large-scale deposit in a stable mining jurisdiction like Australia gains significant strategic importance. Palladium and platinum, in particular, remain critical raw materials for emissions control technologies across various industries.

Market Response and a Clear Roadmap

Investors welcomed the clarified forward plan, sending Chalice Mining shares sharply higher. The stock advanced over 12 percent to €0.96, building a substantial cushion above its recent 52-week low of €0.76. Management has established a clear sequence of major milestones for the project:

• April 9, 2026: Presentation at the RRS Gather Round conference.
• Second Half 2026: Submission of Environmental Referral Documentation (ERD).
• First Half 2027: Completion of the Definitive Feasibility Study (DFS).
• First Half 2028: Targeted Final Investment Decision (FID).

The immediate focus is on an upcoming industry conference next week, where the leadership team is expected to provide details on the current status of engineering work and ongoing dialogue with key stakeholders. The subsequent submission of environmental documentation later this year represents the necessary regulatory step to secure government approvals for eventual construction.