Century Lithium Corp. announced the results of a National Instrument 43-101 (NI 43-101) feasibility study (Feasibility Study, FS or Study) completed on its 100% owned Clayton Valley Lithium Project (Project) in Nevada, USA. The Feasibility Study was prepared by Wood Group USA Inc. (Wood) and Global Resource Engineering Ltd. (GRE).

With the Feasibility Study completed, the Company will now direct its focus on engineering and permitting. The Company is concurrently advancing discussions with government agencies, strategic partners, and other interested parties to provide funding to advance the Project and maximize the value to the Company's shareholders that is reflected in the FS. The Mineral Resource and Reserve Estimates for the Project were updated for the Feasibility Study and built using geologic data and 1,318 lithium assays from 45 core holes drilled between 2017 and 2022.

The constrained Measured and Indicated Resource Estimate is 1,207.33 Mt with an average grade of 957 ppm lithium and contains 1.155 Mt of Li or 6.148 Mt of LCE. The Proven and Probable Mineral Reserve Estimate was derived from the constrained Mineral Resources and contains 287.65 Mt with an average grade of 1,149 ppm lithium and contains 0.330 Mt of Li or 1.759 Mt of LCE and reflects an increase of 74.6 Mt and 0.48 Mt LCE compared to the 2021 Mineral Reserve Estimate. The Mineral Resources were generated with a pit shell that encompasses all mineralized material within the Property excluding all areas that will be used for Project infrastructure and placement of tailings, waste, and low-grade material.

PROCESS METALLURGY & CHLOR-ALKALI PLANT: Metallurgical testing through 2020 focused on using sulfuric acid (H2SO4) to extract lithium from the clay. In late 2020, testing shifted to hydrochloric acid (HCl) for its improved compatibility with the deposit's chemistry. These benefits included higher lithium extractions, lower reagent consumptions, significantly better filtration of solids, and the ability to utilize certain DLE technologies in the recovery and concentration of lithium from the leach solutions.

A key component of the Project with chloride-based leaching is a chlor-alkali plant. The chlor-alkali plant provides the ability to produce the key reagents HCl and NaOH on-site from the electrolysis of a sodium chloride (NaCl) solution. A chlor-alkali plant represents a greater capital investment relative to that of a sulfuric acid plant but has important environmental and economic benefits for the sustainability of the Project.

These benefits include replacing the purchase and transportation of sulfur with regionally sourced salt, and a reduction in emissions and the physical footprint of the operation with dryer, non-sulfate tailings. Additionally, the chlor-alkali plant will generate significant quantities of NaOH surplus to the Project's operational needs and therefore available for sale. The chlor-alkali plant will utilize modern electrochemical cell technology thereby producing membrane grade sodium hydroxide without the energy consumption and environmental problems of older technologies.

The surplus amounts of NaOH are inherent to the operation of the plant and the sales represent a significant offset to the Project's operating costs. LITHIUM EXTRACTION, RECOVERY & Li2CO3 PRODUCTION: A lithium recovery of 78% is used in the Feasibility Study, based on the data collected in over two years of operations at the Pilot Pant. Feed material grades averaged 1,100 ppm.

Leach solution samples varied from 200 to 320 ppm Li. Lithium extractions averaged 88% and varied from 80 to 95%. DLE lithium recoveries were typically above 90%.

10% of the lithium in solution is retained in the moisture remaining in the tailings. Extraction rates do not account for losses downstream and are only indicative of the potential overall recovery. Work at the Pilot Plant continues to focus on reducing losses of lithium to tailings.

A small loss of lithium from processing the DLE product solutions into Li2CO3, and the recycling of process solutions to the DLE and leach areas is anticipated. During 2022 and 2023, Saltworks processed the DLE product solutions from the Pilot Plant and made battery-quality Li2CO3 at greater than 99.5% purity. Modifications at the Pilot Plant in mid-2023 increased lithium solution grades to over 14 grams per liter which simplified the flowsheet and eliminated the evaporation stage for production of Li2CO3.

PRODUCTION PLAN: The Project's production plan comprises three equal phases of production rate increases, Phase 1 and Phase 2 production rates are maintained over five years each and Phase 3 is maintained for 30 years. This approach was selected to reduce capital exposure and risk by dividing the Project's production schedule into realistic phases of construction and equipment installation. The plan fully utilizes the Project's Mineral Reserve.

Phase 1 includes all work required to implement the Initial Project Plan including all necessary mining and processing infrastructure. The Phase 2 cost estimate focuses on an expansion within the footprint of Phase 1. Phase 3 development includes an additional processing plant and facilities not built in the previous phases and allows for a fourth phase of expansion.