Critical Elements Provides Assay Results on Its 10,000-Metre Drill Program at Rose West
Rose West Footprint Expansion Confirmed, Grades Validate Model but Financing Remains Key Catalyst

The most recent release (April 29, 2026) confirms assay results from the Phase 1 Winter 2026 drill program at the Rose West Discovery. The program expanded the mineralized footprint significantly from an initial 450 m x 370 m to a current estimate of 1,250 m x 800 m. Three new spodumene-bearing pegmatitic bodies (Pegmatite 3, 5, and 7) were identified with thicknesses ranging from 10 to 40 meters. Assay results confirmed high-grade lithium (Li2O) and tantalum (Ta2O5) continuity across the expanded zone. Significant intercepts include up to 3.11% Li2O over 7.40 m in Hole RW-26-46. This follows a preliminary update on April 1, 2026, which had already announced the footprint expansion but with lower reported high-grade intercepts (up to 1.51% Li2O). The release also notes the passing of Director Marc Simpson on April 24, 2026.
The news is categorized as Routine - Positive because the core value driver—the footprint expansion—was already disclosed in the preliminary update released just one month prior (April 1, 2026). While the final assay results confirm grade continuity and reveal higher-grade intervals than the preliminary report (3.11% vs 1.51%), this represents a validation of expectations rather than a fundamentally new discovery that alters project economics unexpectedly. The market likely priced in the expansion potential following the April 1 announcement. However, confirming high-grade continuity de-risks the resource estimation process and supports the feasibility study assumptions (NPV US$2.2B). The passing of Director Marc Simpson is a neutral administrative event with no operational impact but highlights governance stability risks if key personnel depart without succession planning.
Critical Elements Lithium Corp. focuses on hard-rock lithium-tantalum development in Quebec, Canada. The flagship asset is the Rose Lithium-Tantalum Property (100% owned), which includes the Rose West Discovery. A Feasibility Study completed in August 2023 indicated an after-tax NPV of US$2.2 billion and an IRR of 65.7%. The project aims to produce high-purity spodumene concentrate. Recent exploration has focused on expanding the resource base at Rose West and exploring nickel-copper-PGE potential on the Nemaska Belt properties.