First Lithium Minerals Corp. announced that it has directly staked additional 547 mining claims at its existing 100%-owned Lidstone exploration project (the "Lidstone") located in the Thunder Bay Mining Division of northwestern Ontario. The new mining claims represent a significant increase and expand the total claims area by 11,105 hectares to a total of 12,830 hectares.

In January 2024, the Ontario Geological Survey (OGS) issued its 2023-2024 Recommendations for Exploration report based on the Resident Geologist Program (RGP) using the existing OGS geological and mineral exploration data along with field exploration activities, that highlighted lithium-cesium-tantalum (LCT)-type pegmatite potential in the Witchwood and Morden Lake Areas, Eastern English River Subprovince, which are located in the immediate area of the Company's Lidstone project. The exploration recommendation in the report was based on field work and sampling that was conducted by OGS during the 2023 field season and historical exploration and geological research in the area. Areas considered for exploration included theWWwood and Morden Lake areas, which have many regional features favourable for rare-element pegmatites, including the presence of metasedimentary and metavolcanic rocks in proximity to peraluminous granite plutons located near the subprovince boundary.

Pegmatites samples collected were coarse muscovite with possible apatite and were encountered at surface. The Lidstone project area is in the Thunder Bay Mining Division of northwestern Ontario, approximately 120 km northeast of the town of Armstrong, Ontario, has good infrastructure for exploration activities with many forestry roads providing easy access. The newly acquired mining claims are in Witchwood and Morden Lake areas and adjacent to the existing Lidstone mining claims. The Lidstone mining claims group lies near the margins of the English River Subprovince of the Superior Province and remains primarily unexplored.

The historical exploration work in the area indicated the presence of mafic-ultramafic intrusive rocks hosting anomalous Ni-Cu-PGE mineralization. The area also exhibited anomalous lake geochemistry lithium (Li) grade clusters.