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Monumental Minerals Corp. Retains Ocean Wall Ltd to Act as Strategic and Corporate Advisor

Corporate Updates

MONUMENTAL MINERALS CORP. RETAINS OCEAN WALL LTD TO ACT AS

STRATEGIC AND CORPORATE ADVISOR

News Release - Vancouver, British Columbia – September 15, 2022: Monumental Minerals Corp.

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

announce that it has retained Ocean Wall Ltd. to act as the Company’s strategic and corporate advisor. This

will include introductions to significantly capitalized funds across the globe and corporations looking to

secure a source of critical elements. Additional services will include general corporate advisory services,

business advisory board assistance, merger and acquisition advice, advice around corporate actions and

preparation ahead of shareholder meetings and AGMs.

Dr. Jamil Sader, CEO and Director comments

“We are thrilled to retain and partner with Ocean Wall. Their deep knowledge and understanding

of capital markets, and their close relationships with high-quality investors in Europe will help to open new

doors for Monumental. We also look forward to a utilizing Ocean Wall’s corporate advisory services and

management expertise as Monumental’s lithium and rare earth projects grow and evolve.”

Nick Lawson, CEO of Ocean Wall comments

“We are delighted to be working with Monumental Minerals and its excellent management

team. They have a strong background of lithium property development and have put together an excellent

JV portfolio with a strong on-the-ground team in Chile. We look forward to a very successful partnership

and to bringing this exploration company through to a development company and beyond.”

About Ocean Wall Ltd.

Ocean Wall Ltd was established in 2019 in order to provide a comprehensive, high -touch service advising

on, and undertaking, the raising of capital for the very best in class managers and companies. Their aim is

to go further than Ocean Wall’s peers in developing close relationships with allocators to establish their

exact investment criteria and thus present to them only suitable, well r esearched and high -quality

investment opportunities. Ocean Wall remain actively involved throughout the cycle of the investment and

maintains close ties with their funds and private companies thereby allowing them to continue to determine

that an investment is both suitable for each investor and performing in line with pre-determined targets.

They can also fulfil an official role as the Investor Relations contact and so will be the allocator’s first port

of call w hen they have any queries regarding the performance and future direction of their investment.

Ocean Wall Limited is authorised and regulated by the Financial Conduct Authority.

www.oceanwall.com

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:

Jamil Sader, Chief Executive Officer and Director

Email: [email protected]

Or

Max Sali, VP Corporate Development and Director

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 th e 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 expected benefits and

outcomes from the agreement with Ocean Wall, 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 uncertainti es 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.