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Monumental Minerals Corp. Announces Michelle Dececco, Corporate Development FOR Lithium Chile, to the Board of Directors

Management Changes

MONUMENTAL MINERALS CORP. ANNOUNCES MICHELLE DECECCO,

CORPORATE DEVELOPMENT FOR LITHIUM CHILE, TO THE BOARD OF

DIRECTORS

News Release - Vancouver, British Columbia – April 27 , 2022: Monumental Minerals Corp.

(“Monumental” or the “Company”) (TSX-V: MNRL; FSE: BE5) is pleased to announce the appointment

of Michelle DeCecco to the board of directors.

Michelle DeCecco, MBA, has over 20 years of experience in the public sector specializing in capital

markets, security regulations and corporate development. Throughout her career, Ms. DeCecco has been

responsible for developing and executing overall corpor ate strategy including acquisitions, joint ventures,

strategic partnerships, with a strong focus on shareholder communications. Michelle is the Vice President

of Lithium Chile Inc. Ms. DeCecco holds a Master’s in Business Administration receiving honours in both

accounting and finance.

Dr. Jamil Sader, CEO and Director comments “We are pleased with the addition of Ms. DeCecco to the

Board. We are confident this move w ill bolster the relationship that we have with Lithium Chile moving

forward as partners and growing as companies.”

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 C ompany’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 Lagun a project located in Chile. The Company has an option to acquire a

100% interest and title to the Weyman property located in the Kamloops and Nicola Mining Divisions and

in the Thompson Nicola Regional District, British Columbia.

On behalf of the Board of Directors,

/s/ “Jamil Sader”

Jamil Sader, Chief Executive Officer and Director

Contact Information:

Email: [email protected]

Or

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, 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 developments 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 performance

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.