Erdene will hold its Annual General Meeting on Thursday

ERDENE RESOURCE DEVELOPMENT CORP.

2010 Annual General Meeting – June 23, 2011

For Immediate Release

Halifax, Nova Scotia – June 21st, 2011 - Erdene Resource Development Corp. ("Erdene") (TSX:ERD)

Erdene will hold its Annual General Meeting on Thursday, June 23, 2011 at 5:30pm (Atlantic Time) at Purdy’s Wharf Tower II, 1300 – 1969 Water Street, Halifax, Nova Scotia. A live webcast of Peter Akerley’s presentation will be available on Erdene’s website at: AGM Webcast.

About Erdene

Erdene Resource Development Corp. is a diversified resource company with multiple projects in Mongolia, Canada, and the USA, at various stages of development, from exploration to production; all projects are focused on high-growth commodities. In Mongolia, Erdene’s principals have over 14 years of experience in the country’s resource sector. A dedicated technical and management team has resulted in the development of a strong portfolio of molybdenum-copper, copper-gold, and coal projects throughout the country. These projects, and our in-country experience, provide the Company with a unique opportunity to participate in this period of unprecedented economic growth in Mongolia. This growth is fuelled by the discovery and development of a number of World-class mineral projects that are transforming the country into one of Asia’s mineral resource leaders.

NO REGULATORY AUTHORITY HAS APPROVED OR DISAPPROVED THE CONTENTS OF THIS RELEASE

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Contact information

Erdene Resource Development Corp.

Peter C. Akerley, President and CEO or Ken W. MacDonald, Vice President Business Strategy and CFO Phone: (902) 423-6419 E-mail: [email protected] www.erdene.com

Renmark Financial Communications Inc.

Barbara Komorowski: [email protected] Dustin Buenaventura: [email protected] Phone: (514) 939-3989 or (416) 644-2020 www.renmarkfinancial.com