Frontier Lithium Inc. announced the results for four of the drill holes completed during the Phase XII drill program on the Spark pegmatite. Phase XII drill program that began in May 2022 and is currently in progress. The initial drill holes were designed to quickly convert inferred material to the indicated category for the planned open pit.

The Spark pegmatite is one of the two delineated premium spodumene-bearing lithium deposits on the PAK Lithium Project. The initial objective for the Phase XII drill program was to focus on converting the Inferred resource lithium bearing material within the central portion of the Spark deposit at depth. DDH's PL-57, 58, 63 and 64 were all terminated in pegmatite due to PFS time constraints requiring quick upgrading of some of the existing inferred resource.

The holes will be extended later in the program. With this objective in mind, most May and June drill holes are steeply dipping (>-65) and designed to infill the Inferred area to a vertical depth of around 300-320m. These holes will be included in the upgraded Measured-Indicated Resource for Spark that will become part of the Prefeasibility Study (PFS) targeted for completion by the end of 2022.

Currently Frontier has two drill rigs completing in-fill and delineation drilling defining the eastern part of the Spark deposit and defining the western extensions of the deposit. Several of the initial Phase XII holes that were terminated in mineralization will be extended. At the time of this press release Frontier had completed over 7,000m in 22 holes.

Laboratory analysis were only complete for the four holes reported. 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. Under Frontier's QA/QC procedures, all drilling was completed by Chenier Drilling Ltd. of Val Caron, ON using thin walled BTW drill rods (4.2 cm core diameter) and a Reflex ACT III oriented core system.

Using the Reflex system, the drill core was oriented and marked as it was retrieved at the drill. The core was boxed and delivered to the Frontier core shack where it was examined, geologically logged, and marked for sampling. The core was photographed prior to sampling.

Using a rock saw, the marked sample intervals were halved with one-half bagged for analysis. Sample blanks along with lithium, rubidium and cesium certified reference material was routinely inserted into the sample stream in accordance with industry recommended practices. Field duplicate samples were also taken in accordance with industry recommended practices.

The samples were placed in poly sample bags and transported to Red Lake by float plane and then shipped to AGAT Laboratories Ltd. (AGAT) in Thunder Bay for sample preparation and to Mississauga, Ontario for processing and quantitative multi-element analysis. AGAT is an ISO accredited laboratory. The core is stored on site at the Pakeagama Lake exploration camp.