Rio Narcea Gold Mines (RNO) 6-K Rio Narcea Announces Fourth Quarter and Year-End Conference Call

NEWS RELEASE

     March 21, 2007

  Trading Symbol: TSX: RNG

  Amex: RNO

Rio Narcea Announces Fourth Quarter and Year-End Conference Call

Toronto, Ontario  –Rio Narcea Gold Mines, Ltd. (“Rio Narcea” or “the Company”)today announced it will report 2006 fourth quarter and year-end results, after the close of trading, on March 28, 2007.  A conference call/webcast will be held the following day at 10:00 a.m. Eastern Time that will be carried on the Company’s website.

Live Conference Call Details for March 29, 2007-10:00AM ET:

Local and International Access: 416.695.9719

North American Toll-Free Access: 1.877.461.2814

The 2006 fourth quarter and year-end results will be available prior to the conference call in the Investor Relations section of the Company’s website at www.rionarcea.com.  Additionally, there will be a replay of the conference call available until April 5, 2007.  Please dial 416.695.5275, and for toll-free access please dial 1.888.509.0081 using the passcode of 642183.

Rio Narcea Gold Mines, Ltd. is a growing Canadian mineral resource company with operations, development projects and exploration activities in Spain, Mauritania and Portugal.  The Company currently produces nickel and copper at its Aguablanca mine in southern Spain.   Construction of its new Tasiast gold project in Mauritania, West Africa, is underway, with production expected in 2007.  The Company recently acquired a strategic shareholding in Chariot Resources Limited, which provides exposure to the significant potential of the Marcona Copper Project in southern Peru.

Forward-looking Statements

This press release may contain certain “forward looking statements” within the meaning of the United States securities laws. Forward-looking statements include statements concerning plans, objectives, goals, strategies, future events, capital expenditures, exploration efforts, financial needs, and other information that is not historical information. The forward-looking statements contained herein are based on Rio Narcea’s current expectations and various assumptions as of the date such statements are made. Rio Narcea cannot give assurance that such statements will prove to be correct.

Factors that could cause Rio Narcea's actual results to differ materially from these statements include, but are not limited to, changes in gold and nickel prices, the timing and amount of estimated future production, unanticipated grade changes, unanticipated recovery problems, mining and milling costs, determination of reserves, costs and timing of the development of new deposits, metallurgy, processing, access, transportation of supplies, water availability, results of current and future exploration activities, results of pending and future feasibility studies, changes in project parameters as plans continue to be refined, political, economic and operational risks of foreign operations, joint venture relationships, availability of materials and equipment, the timing of receipt of governmental approvals, capitalization and commercial viability, the failure of plant, equipment or processes to operate in accordance with specifi cations or expectations, accidents, labour disputes, delays in start-up dates, environmental costs and risks, local and community impacts and issues, and general domestic and international economic and political conditions.

Rio Narcea undertakes no obligation to publicly update these forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.  The reader is cautioned not to place undue reliance on forward looking statements.

For further information please contact:

Chris von Christierson
Chairman & CEO
Tel: + (44) 207 629 2252
E-Mail: cvc@sprospecting.com

Omar Gomez
C.F.O.

Tel: + (34) 98 573 3300
E-Mail: omar.gomez@rngm.es

Michelle Roth

Roth Investor Relations, Inc.

Tel. +1 732 792 2200

Email: michelleroth@rothir.com

Web Site: www.rionarcea.com