First Lithium Minerals to Conduct Magneto-Telluric Surveys

Toronto, Ontario - First Lithium Minerals Corp. (CSE: FLM) (FSE: X28) ('First Lithium Minerals' or the 'Company') is pleased to announce the commencement of Magneto-Telluric ('MT') geophysical surveys on its 100% owned OCA lithium project ('OCA Project') in the Antofagasta Region of northern Chile.

SouthernRock Geophysics S.A. has been contracted to conduct the geophysics with Magneto-Telluric surveying to define the base of the highly conductive intervals identified by Transient Electromagnetic ('TEM') geophysical surveying undertaken by the Company in Q4/22 (see the Company's news release dated December 13, 2022). MT is an electro-magnetic technique that uses naturally occurring passive telluric sources to define the sub-surface resistivity structure as a proxy for mapping geological contacts and structures to depths of up to several kilometres.

The principal objective of the MT geophysical survey is to further define the distribution of highly conductive horizontal zones of less than 1.0 Ohm-meter at depths below 400m, beyond the scope of the TEM surveying, on two identified sectors at northeastern prospect areas at the salar de Ascotan (approx. 1,775 ha) and salar de Carcote (approx. 1,275 ha) including the southern prospect area of the salar de Ollague (approx. 300 ha). The proposal contemplates a total of 60 Tensor MT sites spaced 600m along 3 lines at Ascotan and a further 5 lines at the Ollague-Carcote area (Fig. 1 and Fig. 2).

About First Lithium Minerals

First Lithium Minerals is a Canadian mineral exploration and development company. The Company is currently focusing on exploring for lithium and alkali metals at its 100% owned OCA lithium project comprised of approximately 9,000 ha of mineral exploration concessions located in the salars of Ollague, Carcote, and Ascotan in the Antofagasta Region of northern Chile. The Company successfully identified two priority exploration targets at the salars for potential brine mineralization and is currently conducting extensive geophysical and geochemical surveying with the objective of drill target definition.

Additional information about the Company is available on the Company's website: www.firstlithium.ca

Qualified Person

Adrian Smith, P.Geo., is an independent qualified person ('QP') as defined by NI 43-101. The QP is a member in good standing of the Professional Geoscientists Ontario (PGO) and is a registered Professional Geoscientist (P.Geo.). Mr. Smith has reviewed and approved the technical information disclosed above.

Contact:

Rob Saltsman

CEO and Director

First Lithium Minerals Corp.

77 King St. W Suite 3000

Toronto, ON M5K 1G8

Tel: [phone]

Email: [e-mail]

Caution Regarding Forward-Looking Statements

This news release contains 'forward-looking information' within the meaning of applicable securities laws. Any such forward-looking information may be identified by words such as 'expects', 'anticipates', 'intends', 'contemplates', 'believes', 'projects', 'plans' and similar expressions. Readers are cautioned not to place undue reliance on forward-looking information. Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause the actual results, level of activity, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking information, including but not limited to: exploration activities, geophysical and geochemical surveys, its results and interpretation, drill target definition, permitting, licences, environmental laws and regulations, the discovery and delineation of mineral deposits/resources/reserves, general business, economic, competitive, reliance on third parties, the actual results of operations, and other risks of the resources industry. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. The Company disclaims any obligation to update or revise any forward-looking statements information, except in accordance with applicable securities laws. Accordingly, readers should not place undue reliance on forward-looking information.

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