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Erdene Announces Q3 2024 Results and Provides Bayan Khundii GOLD Project Update

Financials

TSX: ERD | MSE: ERDN

www.erdene.com 1 [email protected]

ERDENE ANNOUNCES Q3 2024 RESULTS AND

PROVIDES BAYAN KHUNDII GOLD PROJECT UPDATE

Press Release

Halifax, Nova Scotia

2025.11.14

Erdene Resource Development Corp. (TSX:ERD | MSE:ERDN) ("Erdene" or the

"Company") is pleased to announce operating and financial results for the three months

ended September 30, 2024, and to provide an update on progress at the Bayan Khundii

Gold Project (“BK” or “Project” ), being developed with Mongolian Mining Corporation

(“MMC”). This release should be read in conjunction with the Company’s Q3-2024

Condensed Consolidated Interim Financial Statements and MD&A, available on the

Company’s website and SEDAR+.

Peter Akerley , Erdene’s President and CEO stated, “The third quarter of 202 4 was

another productive period for Erdene as we made significant progress on the construction

of the Bayan Khundii Gold Mine and saw exceptional results from expansion drilling

peripheral to the planned open pit.”

He cont inued, “ At the end of September, the Bayan Khundii process plant , the critical

path facility, was approximately 55% complete. All major mechanical equipment is on site,

the SAG and ball mills have been installed, and construction of non-process infrastructure

is proceeding well , with major progress on the integrated mineral waste facility , 400

person accommodation complex, and 110 kV overhead transmission line during the past

quarter bringing the overall project to 45% complete.”

Mr. Akerley added, “We expect the process plant and critical non-process infrastructure

buildings to be closed over the coming months, allowing for mechanical and electrical

works completion in Q1 and commissioning beginning in Q 2 2025, as we work toward

first gold in mid -2025 and commercial production in Q3 2025 . During the fourth quarter,

EM management will complete a detailed schedule review and assessment of spending

to complete construction . While we anticipate an increase in capex due to weather and

logistical delays and modest scope changes, these impacts are forecast to be

manageable with available funding.”

Mr. Akerley concluded, “Expansion drilling in Q3 adjacent to the planned Bayan Khundii

open-pit returned the highest grades to date in the area , demonstrating strong growth

potential. Additionally, ore control drilling during the past quarter confirmed the high-grade

nature of the Bayan Khundii deposit, consistent with the reserve model in near surface

zones. These results will be incorporated into an updated Bayan Khundii mine plan in the

coming months.”

TSX: ERD | MSE: ERDN

www.erdene.com 2 [email protected]

Q3-2024 Highlights and Significant Subsequent Events:

TSX: ERD | MSE: ERDN

www.erdene.com 3 [email protected]

TSX: ERD | MSE: ERDN

www.erdene.com 4 [email protected]

Images: Bayan Khundii Construction Site – Q3 2024

TSX: ERD | MSE: ERDN

www.erdene.com 5 [email protected]

Bayan Khundii Gold Project

• Reached approximately 45% construction progress at Bayan Khundii at September 30,

2024

- Approximately US$7 0 million of Project expenditures incurred to the end of Q3

2024 – potential cost increases due to logistical and weather delays and minor

scope changes are expected to be within available funding

- Process plant, the critical path facility, was ~55% complete at quarter end, with all

bulk concrete pours and mechanical equipment installation of the SAG and ball

mills complete

- Construction of non -process infrastructure, including camp, 110 kV overhead

transmission line, warehouse, workshop , administration building and utilities

proceeding well

- Construction expected to be largely complete in Q1 2025 with commissioning in

Q2 and first gold production in mid-2025 followed by commercial production in Q3

- Approximately 650 personnel on-site at quarter end achieving ~2,000,000

construction hours without a lost-time or environmental incident

• Advanced community development and local employment stakeholder programs

- Local Cooperation Agreement for 2024 implemented supporting local development

programs

- Recruitment and training of Bayan Khundii mine workforce continued with seventh

cohort of local residents selected for equipment operator training at MMC’s UHG

mine, bringing total number of trainees to 140 people to date

TSX: ERD | MSE: ERDN

www.erdene.com 6 [email protected]

- Company supported installation and improvement of three rural water wells to

increase water availability for residents

Khundii Minerals District Exploration

• Conducted 1,500 metre Bayan Khundii ore-control drill program

- Drilled 89 shallow holes totaling 1,048 metres focused on high -grade domains,

within 15 metres of surface, scheduled to be developed in the first 3 -4 months of

mining and a further 10 holes totaling 456 metres to assist with future mine

planning

- Results confirmed the high-grade domains in the current block model with highlight

intersection of 6.61 g/t Au over 12 metres, starting at surface

• Completed 950 metre expansion program on the periphery of the Bayan Khundii

planned open pit

- Drilling intersected gold mineralization in all holes, demonstrating the potential for

resource growth and pit extension

- Results included the highest-grade drilling results to date in Striker West, adjacent

to the Bayan Khundii open-pit, including 7.3 g/t gold over 42 metres, with multiple

high-grade metre intersections of 15 to 79 g/t gold (BKD-377)

Corporate

• Recorded net loss of $1,687,580 for the three months ended September 30, 2024,

compared to a net loss of $1,200,099 for three months ended September 30, 2023

- Exploration and evaluation expenses totaled $215,903 for the three months ended

September 30, 2024, compared to $219,670 for the same quarter in 2023, as

increased activity compared to the prior year and an increase in non -capitalized

Mongolian office costs following the close of the Strategic Alliance was more than

offset by a reduction in stock based compensation due to the timing of annual

performance stock option grants

- Corporate and administrative expenses totaled $582,089 for the three months

ended September 30, 2024, compared to $600,595 for three months ended

September 30, 2023, with the decrease from the prior year comparative quarter

primarily due to the timing of a nnual staff performance DSU grants, which were

incurred in the Q2 2024 compared to Q3 2023, partially offset by increased

marketing spend related to an investor site visit

- Loss from investment in associate of $918,649 for the three months ended

September 30, 2024, compared to $445,493 for the three months ended

September 30, 2023, with the period over period change primarily due to an

increase in non -capitalized interest exp enditures by EM following the February

2024 financing partially offset by Erdene’s change in ownership following the close

of the Strategic Alliance in Q1 2024

TSX: ERD | MSE: ERDN

www.erdene.com 7 [email protected]

Qualified Person

Peter Dalton, P.Geo. (Nova Scotia), Senior Geologist for Erdene, is the Qualified Person

as that term is defined in National Instrument 43-101 and has reviewed and approved the

technical information contained in this news release.

About Erdene

Erdene Resource Development Corp. is a Canada-based resource company focused on

the acquisition, exploration, and development of precious and base metals in

underexplored and highly prospective Mongolia. The Company has interests in three

mining licenses a nd an exploration license in Southwest Mongolia, where exploration

success has led to the discovery and definition of the Khundii Gold District. Erdene

Resource Development Corp. is listed on the Toronto and the Mongolian stock exchanges.

Further informati on is available at www.erdene.com. Important information may be

disseminated exclusively via the website; investors should consult the site to access this

information.

Forward-Looking Statements

Certain information regarding Erdene contained herein may constitute forward -looking

statements within the meaning of applicable securities laws. Forward-looking statements

may include estimates, plans, expectations, opinions, forecasts, projections, guidance, or

other statements that are not statements of fact. Although Erdene believes that the

expectations reflected in such forward-looking statements are reasonable, it can give no

assurance that such expectations will prove to have been correct. Erdene ca utions that

actual performance will be affected by a number of factors, most of which are beyond its

control, and that future events and results may vary substantially from what Erdene

currently foresees. Factors that could cause actual results to differ m aterially from those

in forward-looking statements include the ability to obtain required third party approvals,

market prices, exploitation, and exploration results, continued availability of capital and

financing and general economic, market or business conditions. The forward -looking

statements are expressly qualified in their entirety by this cautionary statement. The

information contained herein is stated as of the current date and is subject to change after

that date. The Company does not assume the o bligation to revise or update these

forward-looking statements, except as may be required under applicable securities laws.

NO REGULATORY AUTHORITY HAS APPROVED OR DISAPPROVED THE

CONTENTS OF THIS RELEASE

Erdene Contact Information

Peter C. Akerley, President and CEO, or

Robert Jenkins, CFO

Phone: (902) 423-6419

Email: [email protected]

Twitter: https://twitter.com/ErdeneRes

Facebook: https://www.facebook.com/ErdeneResource

LinkedIn: https://www.linkedin.com/company/erdene-resource-development-corp-/