Frontier Lithium to drill untested Bolt Pegmatite

SUDBURY, March 15, 2023 - Frontier Lithium Inc. (TSXV: FL) (FRA: HL2) (OTCQX: LITOF) ("Frontier" or "the Company") is pleased to provide an update for current and future exploration plans for the PAK Lithium Project (the Project) in northwestern Ontario.

Highlights

• Frontier Lithium has an exploration target of 100M tonnes (measured, indicated and inferred) of open pit resource on the Project;
• Phase XIII Diamond Drill Program targeting up to 10,000 meters;
• The Project has two exploration drills on site with maiden drilling on the untested 600 meter long Bolt pegmatite to commence by spring;
• PAK deposit geotechnical and environmental drilling currently underway;
• Exploration drilling planned to test Spark deposit western extension towards a high-grade target 1.1km on strike from the resource;
• Continue to conduct environmental baseline studies to advance project permitting.

The Phase XIII drill Program has been designed to contribute towards the Company's Exploration target of 100M tonnes of open pit resource on the PAK Lithium Project (Figure 1) and to perform limited geotechnical and environmental drilling to support feasibility study of the Project.

A maiden drill program will soon commence testing the 600 meter long Bolt pegmatite showing located between the PAK and Spark deposits (Figure 2). Currently the Bolt pegmatite has been defined by surface mapping and two channel cuts (36m channel averaging 1.51% Li2O and 49m channel averaging 1.14% Li2O spaced 230m apart). A minimum of 6 drill holes are planned targeting Bolt. During the summer other targets generated during the 2022 regional mapping and prospecting will be followed-up with detailed mapping, prospecting and channel sampling.

Further exploration drilling is planned to define the western extension of the Spark deposit, particularly the "high grade" zone intersected to the northwest including the one-kilometre area between the Spark deposit and the new pegmatite discovered through two grab samples averaging 3.1% Li₂O in 2022" (Figure 2).

Garth Drever VP Exploration commented" Its exciting times to substantially increase a world-class spodumene pegmatite like Spark with what we anticipate from drilling the Bolt pegmatite. Although not visibly connected on surface, drilling may confirm continuity at depth."

In January 2023, permits were granted by the Ontario government to extract and remove 1,000 metric tonne bulk samples from both the PAK and Spark deposits. Currently drilling, blasting and hauling activities are taking place on the Project. In February the Company commenced hydrogeological and geomechanical drilling on the Project required for feasibility at the PAK deposit pit area. Some in-fill drilling targeting the Spark inferred resource will also be completed as a part of the program.

On February 28^th, 2023, the Company updated the Mineral resource estimate (report pending) on Spark deposit only. Figure 3 is the Global Resource for the Project including PAK deposit as per the 2021 preliminary economic assessment (National Instrument 43-101 technical report titled "NI 43-101 Technical Report.

Figure 3: PAK Lithium Project Global Resource

All scientific and technical information in this release has been reviewed and approved by Garth Drever, P.Geo., the qualified person (QP) under the definitions established by National Instrument 43-101.

Frontier Lithium is a preproduction business with an objective to become a strategic domestic supplier of spodumene concentrates for industrial users as well as battery-grade lithium hydroxide and other chemicals to the growing electric vehicle and energy storage markets in North America. The Company maintains the largest land position and resource in a premium lithium mineral district located in Ontario's Great Lakes region.

The PAK lithium project contains one of North America's highest-grade lithium resources. The project encompasses close to 27,000 hectares and remains largely unexplored; however, since 2013, the company has delineated two premium spodumene-bearing lithium deposits (PAK and Spark), located 2.3 kilometres apart. Exploration is continuing on the project through two other spodumene-bearing discoveries: the Bolt pegmatite (located between the PAK and Spark deposits), as well as the Pennock pegmatite (25 kilometres northwest of PAK deposit within the project claims). A 2021 preliminary economic assessment (National Instrument 43-101 technical report titled "NI 43-101 Technical Report, Pak Property, PAK, Red Lake Mining District, Ontario, Canada" by BBA E&C Inc., with an effective date of April 5, 2021) delivered a fully integrated lithium operation, including the mine and mill and the conversion plant for production of battery-quality lithium salts.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. This release includes certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical facts, that address future production, reserve potential, exploration drilling, exploitation activities and events or developments that the Company expects are forward-looking statements. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward looking statements include market prices, exploitation and exploration successes, continued availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and those actual results or developments may differ materially from those projected in the forward-looking statements. For more information on the Company, Investors should review the Company's registered filings available at sedar.com.

SOURCE Frontier Lithium Inc.