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Independent Analysis Supports Hydraulic Borehole Mining Method Applicability for Bonnie Claire Lithium Project

Independent Validation of HBHM Method Confirms PEA Assumptions but Capital Gap Remains Critical

By The Northwire Desk — AI Analysis Apr 29, 2026 · 07:00 NVLH · 0.12 Nevada Lithium Resources Inc.

Executive Summary

Nevada Lithium released independent technical due diligence by WSP UK Limited regarding Hydraulic Borehole Mining (HBHM) at the Bonnie Claire project.
Assessment confirms HBHM is viable for deeper mineralized zones, validating the mining method assumed in the August 2025 Preliminary Economic Assessment (PEA).
WSP recommends bench-scale testing and modeling suffice for the upcoming Preliminary Feasibility Study (PFS), deferring costly field testing until the Feasibility Study stage.
This recommendation is expected to significantly reduce PFS completion costs compared to initial expectations.
Alternative mining methods (block caving, sub-level caving) will be evaluated in trade-off studies during the PFS process.
The news follows a Winter Work Program announced in December 2025 which specifically included HBHM technical due diligence as a core deliverable.

Material Impact

Expectation vs. Reality: The market was aware of the planned HBHM due diligence from the December 2025 announcement; therefore, this result is largely expected rather than unexpected.
Economic Impact: While cost savings on PFS testing are positive, they do not materially alter the project's $6.8 billion NPV or $2.1 billion capital requirement established in the August 2025 PEA.
Risk Mitigation: Independent confirmation of HBHM viability reduces technical risk regarding the underground mining method, which is a key assumption for bankability. However, field testing remains required for the FS stage, leaving execution risk unresolved.
Stock Reaction Context: The stock has declined from $0.23 (Oct 2025) to $0.12 (Apr 2026) despite multiple positive milestones (PEA, Critical Minerals List, REE discovery). This suggests the market is discounting execution risk and capital needs rather than technical feasibility alone.
Classification: The news validates existing projections without introducing new revenue streams or financing certainty; it fits the definition of Routine - Positive as an incremental follow-up to a previously announced work program.

NVLH · Price

Company Overview

Company: Nevada Lithium Resources Inc. (NVLH).
Flagship Project: Bonnie Claire Lithium Project, 100% owned in Nye County, Nevada.
Mineralization: High-grade lithium, boron, cesium, rubidium, and rare earth elements (REEs) hosted in a volcano-sedimentary deposit.
Mining Method: Proposed underground Hydraulic Borehole Mining (HBHM) for the Lower Zone; conventional open-pit considered for Upper Zone.
Resource Estimate: Effective March 31, 2025, Indicated resources of 275.85 Mt @ 1,800 ppm Li and Inferred resources of 1,561.06 Mt @ 1,800 ppm Li in the Lower Zone.
PEA Highlights: $6.829 billion after-tax NPV (8% discount), 32.3% IRR, 2.8-year capital payback over a 61-year mine life.

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