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Monumental Minerals Corp. Finalizes Plans FOR Follow up Work at the Jemi Heavy Rare Earth Project, Mexico

Corporate Updates

MONUMENTAL MINERALS CORP. FINALIZES

PLANS FOR FOLLOW UP WORK AT THE JEMI

HEAVY RARE EARTH PROJECT, MEXICO

VANCOUVER, BC

,

May 31, 2022

/CNW/ - Monumental Minerals Corp. ("

Monumental

" or the

"

Company

") (TSX-V: MNRL) (FSE: BE5) (OTCQB: MNMRF) is pleased to announce plans for

follow-up exploration work at the Jemi Heavy Rare Earth (HREE) Project ("Jemi"), located in

Coahuila, Mexico

, about 40 km south of the

Texas, USA

border.

The Jemi Project hosts numerous REE occurrences containing potentially economic concentrations

of the high value magnetic REEs including the HREEs dysprosium (Dy) and terbium (Tb), and the

light rare earth elements (LREEs) neodymium (Nd), praseodymium (Pr). The Project also contains

associated tantalum (Ta), niobium (Nb), and zirconium (Zr). Jemi sits within the North American

Alkaline Igneous Belt, an under explored north-south trend over 3000 km long of alkaline igneous

rocks and carbonatites that are host to numerous REE, gold and other critical element deposits.

A Jemi site visit conducted

April 27-30, 2022

(see the Company's news release dated

May 3, 2022

),

confirmed that airborne radiometric anomalies are spatially associated with known HREE mineral

occurrences, and identified an area of approximately 8 square kilometres ("km

2

") with high priority

for follow-up. This area hosts eudialyte-bearing alkaline dykes, veins, and disseminations

(mineralized rocks). Based on field assessments, a plan for further fieldwork was developed. The

work will be conducted by ProDeMin, a consulting company specializing in exploration, discovery,

and development in

Mexico

with extensive experience in the Sierra Madre Oriental mountains, where

Jemi is located.

Jamil Sader

, Monumental's CEO and Director comments:

"Monumental Minerals is excited to progress the Jemi project to the next stage of

exploration. Our site visit in April and airborne geophysical interpretations were key in

focusing our search space from the entire claims area to an area of approximately 8 km

2

.

This planned exploration program includes well established methods for peralkaline REE

mineralization styles and will further reduce our search space to define optimal drill target

locations."

The field program will be divided into two phases. The objective of the first phase is to identify drill

targets within the 8 km

2

high-priority area determined from site visit observations and airborne

radiometrics (Fig. 1). Eudialyte-bearing peralikaline dykes and sills have a strong radiometric

response in contrast to the host rock (limestone). Thus, a ground radiometric survey is planned to

map out these ore-bearing features and their orientation. Detailed geological mapping of rock types

and the collection of structural orientation measurements will also be conducted during the

radiometric survey. Dyke and sill density, plus orientation will assist in the identification of the source

of the mineralized dykes and sills. Selective talus geochemical sampling along hill slopes will be

undertaken to assess differences in REE concentrations and vector to the highest grade

mineralization along strike.

The second phase will be regional in extent and will take the form of a stream sediment geochemical

survey of local drainages at the margins of the Sierra La Vasca igneous complex. This program will

assess areas within and beyond the 8 km

2

area of highest priority. Stream sediment sampling

represents an efficient and effective strategy to test large areas quickly for exploration prospectivity.

The samples will be analyzed for geochemistry and indicator minerals – specifically the mineral

eudialyte.

Figure 1. Jemi HREE Project airborne radiometric anomalies and locations of high priority exploration

targets (yellow dashed ovals) along a strike length of approximately 8 km. (CNW Group/Monumental

Gold Corp)

Rare earth element mineralization discovered to date at Jemi exhibits characteristics and mineralogy

consistent with peralkaline intrusion-related deposits, which represent an important, potentially

economic style of HREE mineralization. Deposits of this type are being explored and prepared for

development in

Australia

,

Europe

, and

North America

.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and

approved by Kristopher J. Raffle, P.Geo. (BC) Principal and Consultant of APEX Geoscience Ltd. of

Edmonton, AB

, a Director of the Company and a "Qualified Person" as defined in National

Instrument 43-101 –

Standards of Disclosure

for Mineral Projects

.

The 1,122 line-km Jemi HREE Project heli-borne geophysical survey was flown at 100 metres east-

west oriented flightlines, and 1 kilometre spaced north-south oriented tie lines at ±15 metre flight

control flying at a nominal 40 metre terrain clearance. The completed survey by

Markham, Ontario

based Terraquest Ltd. utilized high resolution magnetics (Scintrex Ltd. cesium vapour) at

2 m

(20 Hz

sampling), gamma ray spectrometer (Radiation Solutions: RS-500 Advanced Digital Spectrometer),

digital matrix VLF-EM sensors (proprietary Terraquest Ltd.).

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

. 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

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 completion of the follow-up work program on the Jemi project and the

expected outcomes, 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, 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, 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.

SOURCE

Monumental Gold Corp

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/May2022/31/c8874.html

%SEDAR: 00050941E

For further information:

Email: [email protected]; Or Email:

[email protected]

CO: Monumental Gold Corp

CNW 08:00e 31-MAY-22