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Monument Entered into a Collaboration Agreement Gives Gbr Access to Burnakura Mill

Partnerships & JV

April 2, 2025 News Release Release #02- 2025

MONUMENT ENTERED INTO A COLLABORATION AGREEMENT

GIVES GBR ACCESS TO BURNAKURA MILL

Vancouver, B.C ., April 2, 20 25, Monument Mining Limited (TSX -V: MMY and FSE: D7Q1) (“Monument” or the

“Company”) today is pleased to announce that it has signed a Memorandum of Understanding (“Collaboration Agreement”,

or “MOU”) with Great Boulder Resources (“Great Boulder”, ASX: “GBR”) for collaboration to potentially process ore from

Great Boulder’s Side Well Gold Project through M onument’s Burnakura Mill at Meekatharra, Western Australia subject to

availability.

President and CEO Cathy Zhai commented, "I am very pleased with thanks to Mr. Andrew Paterson, the Managing Director

of Great Boulder, for considering Burnakura mill as their treatment option and for his willingness to collaboratively explore

the best solution beneficiary to both parties in optimization of potential production. It will give an opportunity for exploration

companies to generate cash flow as gold prices surge to historical record highs. While junior companies continue to face their

own challenges and navigate the inherent risks of the natural resource industry, we are working hand in hand to find a win -

win solution in the region.”

Background

Following the successful commercial production of the upgraded sulphide gold concentrate plant at Selinsing Gold Mine ,

Monument is now advancing its Murchison Gold Project towards potential commercial production . SRK Consulting

(Australasia) Pty Ltd (“SRK”) is currently engaged to provide economic assessments, including evaluating the Burnakura

mill capacity for initial re-start and potential upgrade options up to 750K tpa. With a proven track record for building-up and

advancing operational mines, Monument continues to leverage its strong production management team to drive growth and

efficiency.

Monument has an estimated Mineral Resource of 5.59Mt @ 2.12g/t for 381koz, comprised of Indicated at 4.04Mt @ 2.3g/t

gold for 293k ounces, Inferred Mineral Resource of 1.55Mt @ 1.8g/t gold for 88k ounces at Burnakura (“NI 43-101 Technical

Report: Updated Mineral Resources, Burnakura Gold Project, Western Australia, Australia”, prepared by SRK, available at

www.monumentmining.com); and historical Mineral Resources (JORC Resource) 2.2Mt @ 2.2g/t Au for 153,000oz at

Gabanintha, plus 20% free carried interest in the Tuckanarra Gold Project.

Great Boulder is a mineral exploration company with a

portfolio of highly prospective gold and base metals assets in

Western Australia ranging from Greenfields through to

advanced exploration. The Company’s core focus is the Side

Well Gold Project at Meekatharra in the Murchison gold field

approximately 48 km north of Burnakura (Figure 1), where

exploration has defined a Mineral Resource of 7.45Mt @

2.8g/t Au for 668,000oz Au (340koz @ 3.4g/t Au Indicated,

327koz @ 2.4g/t Au Inferred). The Company is also

progressing early-stage exploration at Wellington Base Metal

Project located in an emerging MVT province . For more

information on Great Boulder, please refer to

www.greatboulder.com.au.

Figure 1.

Collaboration

The MOU between Great Boulder Resources and Monument Mining is a non-binding agreement setting a framework for the

two companies to evaluate the sustainability of the Burnakura plant to treat GBR’s Side Well ore, assess the technical,

commercial and logistical r equirements for joint operations or toll treatment where applicable, and negotiate commercial

terms for ore treatment at Burnakura.

With both parties undertaking scoping studies on their respective operations, the M OU allows GBR and Monument to

collaboratively share scoping study outputs enabling optimi zation of mining and ore processing. The M OU also allows

collaboration on each company’s area of technical expertise, including GBR’s knowledge of local geology and gold

mineralization, exploration and local stakeholder relationships combined with Monument’s expertise in processing, mining

and metallurgy.

In the event Monument wishes to use Burnakura’s milling capacity to toll treat third-party ore sources, the Agreement provides

pre-emptive processing rights for GBR subject to availability. During the course of the Agreement each company will remain

responsible for its own study costs.

The parties will negotiate a definitive agreement when it is appropriate.

About Monument

Monument Mining Limited (TSX -V: MMY, FSE: D7Q1) is an established Canadian gold producer that 100% owns and

operates the Selinsing Gold Mine in Malaysia and the Murchison Gold Project in the Murchison area of Western Australia. It

has 20% interest in Tuckanarra Gold Project jointly owned with Odyssey Gold Ltd in the same region. The Company employs

approximately 2 50 people in both regions and is committed to sustainability with practice of the high standards of

environmental management, social responsibility, including health and safety for its employees and neighboring communities,

and good corporate governance.

Cathy Zhai, President and CEO

Monument Mining Limited

Suite 1580 -1100 Melville Street

Vancouver, BC V6E 4A6

FOR FURTHER INFORMATION visit the company web site at www.monumentmining.com or contact:

Richard Cushing, MMY Vancouver T: +1-604-638-1661 x102 [email protected]

"Neither 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 release."

Disclaimer Regarding Forward-Looking Statements

This news release includes statements containing forward -looking information about Monument, its business and future plans ("forward -

looking statements"). Forward-looking statements are statements that involve expectations, plans, objectives or future even ts that are not

historical facts and include the Company's plans with respect to its mineral projects, expectations regarding the completion of the ramp-

up period to target production level at Selinsing and the timing thereof, expectations regarding the Company’s continuing ability to source

explosives from suppliers, expectations regarding completion of the proposed storage shed and ammonium nitrate depot and the timing

thereof, and the timing and results of the other proposed programs and events referred to in this news release. Generally, forward-looking

information can be identified by the use of forward -looking terminology such as "plans", "expects" or "does not expect", "is expected",

"budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words

and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved".

The forward-looking statements in this n ews release are subject to various risks, uncertainties and other factors that could cause actual

results or achievements to differ materially from those expressed or implied by the forward -looking statements. These risks and certain

other factors include , without limitation: risks related to general business, economic, competitive, geopolitical and social uncertainties;

uncertainties regarding the results of current exploration activities; uncertainties in the progress and timing of developmen t activities,

including those related to the ramp-up process at Selinsing and the completion of the proposed storage shed and ammonium nitrate depot;

uncertainties and risks related to the Company’s ability to source explosives from suppliers; foreign operations risks ; other risks inherent

in the mining industry and other risks described in the management discussion and analysis of the Company and the technical r eports on

the Company's projects, all of which are available under the profile of the Company on SEDAR at ww w.sedar.com. Material factors and

assumptions used to develop forward-looking statements in this news release include: expectations regarding the estimated cash cost per

ounce of gold production and the estimated cash flows which may be generated from the operations, general economic factors an d other

factors that may be beyond the control of Monument; assumptions and expectations regarding the results of exploration on the Company's

projects; assumptions regarding the future price of gold of other minerals; the timing and amount of estimated future product ion;

assumptions regarding the timing and results of development activities, including the ramp -up process at Selinsing and the completion of

the proposed storage shed and ammonium nitrate depot; expectations that the Company will continue to be able to source explosives from

suppliers in a timely manner; costs of future activities; capital and operating expenditures; succ ess of exploration activities; mining or

processing issues; exchange rates; and all of the factors and assumptions described in the management discussion and analysis of the

Company and the technical reports on the Company's projects, all of which are avai lable under the profile of the Company on SEDAR at

www.sedar.com. Although the Company has attempted to identify important factors that could cause actual results to differ materially from

those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended.

There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ ma terially from

those anticipated in such statements. Accordingly, readers should not place undue reliance on forward -looking statements. The Company

does not undertake to update any forward-looking statements, except in accordance with applicable securities laws.