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Erdene Signs Local Cooperation Agreement with Bayankhongor Provincial Government FOR Bayan Khundii GOLD Project

Partnerships & JV

TSX: ERD | MSE: ERDN

www.erdene.com 1 [email protected]

ERDENE SIGNS LOCAL COOPERATION AGREEMENT WITH

BAYANKHONGOR PROVINCIAL GOVERNMENT FOR BAYAN KHUNDII

GOLD PROJECT

Press Release

Halifax, Nova Scotia

2021.08.05

Erdene Resource Development Corporation (TSX: ERD | MSE: ERDN) (“Erdene” or the

“Company”) is pleased to announce the execution of a Local Cooperation Agreement

(“LCA” or “Agreement” ) with the Bayankhongor Provincial Government , the host

community for its 100%-owned Bayan Khundii Gold Project and all exploration and mining

licenses within the Khundii Gold District.

Quotes from the Company

“Executing the Local Cooperation Agreement is a significant milestone for the B ayan

Khundii Gold Project,” said Peter Akerley, Erdene’s President and CEO. “Having worked

in the community for over a decade we are very pleased to be in a position to advance

our projects to the point where significant benefits can begin to flow to our local

stakeholders. We look forward to working closely with the local leadersh ip members to

ensure the development of a mutually beneficial relationship over the long term.”

Quotes from the Governor of Bayankhongor Province

“We are pleased to execute a comprehensive Local Cooperation Agreement with Erdene

Resource Development Corporation, establishing the terms of cooperation for the Bayan

Khundii gold project,” said Governor D. Munkhsaikhan. “Erdene has operated responsibly

in Bayankhongor province for over a decade , establishing strong relations with local

stakeholders. The Bayan Khundii Gold Project will bring significant benefits and create

many new jobs for local residents. I look forward to supporting the Project.”

Key Terms of the Agreement

• Investments in local communities by Erdene tied to permitting, project

development, and first production milestones, as well as annual payments during

production;

• Establishment of a non -governmental organization comprised of Company and

Community members to administer local investments; and

• Training, employment, and local procurement commitments.

TSX: ERD | MSE: ERDN

www.erdene.com 2 [email protected]

Local Community Engagement

Erdene held its most recent community consultation s in late June 2021, where the

Company presented the Bayan Khundii Gold Project development plans at an official

meeting of local residents. In this meeting, local community members had the opportunity

to ask questions and provide feedback on the Project. As part of this exercise, community

leaders collected a formal survey with the majority of residents supporting the Project’s

development. This meeting is part of the Company’s ongoing initiative of local

consultations, which is an important component of Erdene’s commitment to operating

ethically and considering all stakeholder interests.

In June 2020, Erdene completed an independent E nvironmental and Social Impact

Assessment (“ESIA”) in accordance with the performance requirements of the European

Bank for Reconstruction and Development (“EBRD”), a strategic investor in the Company.

The study was led by Sustainability East Asia LLC, in consortium with Eco Trade LLC

and Ramboll Australia Pty Ltd. The ESIA followed a comprehensive four -stage process,

including impacts scoping, impacts assessment, devel opment of impact mitigation

measures, and consideration of cumulative impacts , all through consultation with local

community members. Management commitments to ensure impacts are avoided or

mitigated are included in the ESIA Management Plans which details Erdene’s

commitment to develop and operate the Bayan Khundii Gold Project in accordance with

leading industry practices.

The ESIA Report and its Non-Technical Summary are available on the company’s website

through the following links:

ESIA Report (ENG): https://bit.ly/Khhundii_Gold_Project_ESIA

Non-Technical Summary (ENG): https://bit.ly/Khundii_Gold_Project_ESIA_Non-

Technical_Summary

ESIA Report (MNG): https://bit.ly/Khundii_Gold_Project_ESIA_mon

Non-Technical Summary (MNG): https://bit.ly/Khundii_Gold_Project_ESIA_Non-

Technical_Summary_Mon

Concurrently, the Mongolian statutory Detailed Environmental Impac t Assessment

(“DEIA”) for the Project has been prepared by Eco Trade LLC in accordance with the

applicable national standards. Following the recent community consultations, which

incorporated the local resident’s feedback, the Company expects to submit its statutory

DEIA to the Ministry of Environment and Tourism of Mongolia for approval in Q3-2021.

Khundii Gold District

Erdene’s deposits are in the Edren Terrane, within the Central Asian Orogenic Belt, host

to some of the world’s largest gold and copper-gold deposits. The Company has been the

leader in exploration in southwest Mongolia over the past decade and is responsible for

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the discovery of the Khundii Gold District comprised of multiple high -grade gold and

gold/base metal prospects, two of which are being considered for development: the

100%-owned Bayan Khundii and Altan Nar projects. Together, these deposits comprise

the Khundii Gold Proje ct. The company also has a 100% interest in the Khuvyn Khar

licence which hosts the large Zuun Mod molybdenum-copper deposit and multiple copper

and molybdenum porphyry targets, 30 kilometers east of the Khundii gold district.

The Bayan Khundii Gold Resource1 includes 521,000 ounces of 3.16 g/t gold Measured

and Indicated (“M&I”)² and 103,000 ounces of Inferred resources at 3.68 g/t gold. Within

the M&I resource, a proven and probable open -pit reserve totals 409,000 ounces at 3.7

g/t (see the full press release here), providing significant potential growth of reserves with

the development of the remaining M&I and Inferred resources1.

In July 2020, Er dene announced the results of an independent Feasibility Study for the

Bayan Khundii Gold Project (press release here). The Feasibility Study results include an

after-tax Net Present Value at a 5% discount rate and a US$1,400/oz gold price of

US$100 million and Internal Rate of Return (“IRR”) of 42%. The Feasibility Study

envisions an open -pit mine at Bayan Khundii, producing an average of 63,500 oz gold

per year, for seven years, at a head grade of 3.71 g/t gold, utilizing a conventional carbon

in pulp processing plant. Production is expected to commence in early 2023 based on the

current project schedule.

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 and two exploration licenses 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 informa tion 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 stat ements 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 cautions that

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

1 For details of the Mineral Resources see Khundii Gold Project NI 43-101 Technical Report, Tetra Tech December 4,

2019 – SEDAR

2 M&I: 171,000 ounces of 3.77 g/t gold Measured, and 349,700 ounces of 2.93 g/t gold Indicated

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www.erdene.com 4 [email protected]

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

currently foresees. Factors that could cause actual results to differ materially from tho se

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 fo rward-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 obligation to revis e 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-/