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MNRG.V ·

Monumental Minerals Acknowledges the General Vote Results ON the Chilean Constitution

Company Commentary

MONUMENTAL MINERALS ACKNOWLEDGES THE GENERAL VOTE RESULTS

ON THE CHILEAN CONSTITUTION

News Release - Vancouver, British Columbia – September 6 , 2022: Monumental Minerals Corp.

(“Monumental” or the “Company”) (TSX-V: MNRL; FSE: BE5; OTCQB: MNMRF) acknowledges the

September 4, 2022 vote by the citizens of Chile, electing not to support a proposed new constitution.

On September 4, 2022 citizens of Chile voted not to support the constitutional text proposed by the

Constitutional Convention. Monumental Minerals will continue to engage and work with all stakeholders

including governmental and indigenous groups in Chile. The Company will also continue to work within

the framework and parameters of Chilean law and strongly believes in fairness and equality when doing so.

Jamil Sader, CEO and Director comments

“Chile’s recent vote on a new constitution, and the respectful and fair way it was undertaken

demonstrates the country’s deep democratic roots , and a political sy stem dedicated to fairness and

transparency. Monumental looks forward to the continued positive engagement with all stakeholders on

our lithium brine projects in the country.”

About Monumental Minerals Corp.

Monumental Minerals Corp. is a mineral exploration company focused on the acquisition, exploration, and

development of mineral resource properties in the critical and electric metals sector. The Company’s

flagship asset is the Jemi HREE project located in Coahuila, Mexico near the Texas, USA border which the

Company has an option to acquire 100% of the 3,650-hectare project. The Company has an option to acquire

a 75% interest and title to the Laguna cesium-lithium brine project located in Chile.

On behalf of the Board of Directors,

/s/ “Jamil Sader”

Jamil Sader, Chief Executive Officer and Director

Contact Information:

Email: [email protected]

Or

Max Sali, VP Corporate Development

Email: [email protected]

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 news

release.

Forward Looking Information

This news release contains “forward‐looking information or statements” within the meaning of applicable securities

laws, which may include, without limitation, the potential plans for the Company’s projects , the timing, completion

and expected outcomes of the next phase of exploration work on the Laguna Project, other statements relating to the

technical, financial and business prospects of the Company, its projects and other matters. All statements in this news

release, other than statements of historical facts, that address events or develop ments that the Company expects to

occur, 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 performan ce

and actual results may differ materially from those in the forward-looking statements. Such statements are based on

numerous assumptions regarding present and future business strategies and the environment in which the Company

will operate in the future , including the price of metals, the ability to achieve its goals, that general business and

economic conditions will not change in a material adverse manner and that financing will be available if and when

needed and on reasonable terms. Such forward -looking information reflects the Company’s views with respect to

future events and is subject to risks, uncertainties and assumptions, including the risks and uncertainties relating to the

interpretation of exploration results, risks related to the inherent uncertainty of exploration and cost estimates and the

potential for unexpected costs and expenses and those other risks filed under the Company’s profile on SEDAR at

www.sedar.com. While such estimates and assumptions are considered reasonable by the management of the

Company, they are inherently subject to significant business, economic, competitive and regulatory uncertainties and

risks. Factors that could cause actual results to differ materially from those in forward looking statements include, but

are not limited to, continued availability of capital and financing and general economic, market or business conditions,

failure to secure personnel and equipment for work programs , adverse weather and climate conditions, risks relating

to unanticipated operational difficulties (including failure of equipment or processes to operate in accordance with

specifications or expectations, cost escalation, unavailability of materials and equipment, government action or delays

in the receipt of government approvals, industrial disturbances or other job action, and unanticipated events related to

health, safety and environmental matters), risks relating to inaccurate geological assumptions, failure to maintain all

necessary government permits, approvals and authorizations, failure to obtain surface access agreements or

understandings from local communities, land owners or Indigenous groups, fluctuation in exchange rates, the impact

of Covid-19 or other viruses and diseases on the Company’s ability to operate, an inability to predict and counteract

the effects of COVID-19 on the business of the Company, including but not limited to, the effects of COVID -19 on

the price of commodities, capital market conditions, restriction on labour and international travel and supply chains ,

decrease in the price of rare earth elements, lithium, cesium and other metals, loss of key employees, consultants, or

directors, failure to maintain community acceptance (including from the Indigenous communities), increase in costs,

litigation, and failure of counterparties to perform their contractual obligations . The Company does not undertake to

update forward‐looking statements or forward‐looking information, except as required by law.