MMX Discloses Technical Report of MMX Minas-Rio's Mineral Resources

RIO DE JANEIRO, BRAZIL -- (MARKET WIRE) -- 03/12/08 -- MMX Mineracao e Metalicos S.A. (BOVESPA: MMXM3) (TSX: XMM) ("MMX") hereby informs its shareholders and investors that a new Technical Report of MMX Minas-Rio's mineral resources has been concluded.

The report contains updated and audited technical information, from geological research held until November 2007. MMX Minas-Rio will continue to carry out its drilling campaign in 2008 and 2009.

The audit of the resources was carried out according to the standards set by the Canadian Institute of Mining, Metallurgy and Petroleum (CIM Standards) and by the National Instrument 43-101 of the Canadian Securities Administrators (NI 43-101). SRK Consulting, a company specialized in geology, mining and mineral resources determination, was responsible for the audit.

MMX's mining department has prepared a document -- Explanatory Notes to the Certification of Resources Report -- containing the necessary information on the technical report.

The explanatory notes and the technical report are available on the Company's Investor Relations website (www.mmx.com.br/ri).

MMX Mineracao e Metalicos S.A. Luiz Rodolfo Landim Machado Executive President and Investor Relations Officer

Contact: MMX - Investor Relations Elizabeth Cruz / Gina Pinto Tel. 55 21 2555-5634 / 2555-5558 ri@mmx.com.br www.mmx.com.br/ri

2008-03-12 17:30:38 0311315 MARKETWIRE