Sierra Metals Inc.

TSX Venture Exchange - DIB
Bolsa de Valores de Lima - DIB

TORONTO, March 30, 2012 /PRNewswire/ - Dia Bras Exploration Inc.

TSX Venture Exchange - DIB

TORONTO, March 13, 2012 /PRNewswire/ - Dia Bras Exploration Inc.

TORONTO, ONTARIO -- (Marketwire) -- 03/01/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB)(LMA: DIB) ('Dia Bras' or the 'Company'), a Canadian listed mining company focused on precious and base metals in Peru and Mexico, announces that its Peruvian subsidiary, Sociedad Minera Corona S.A. ('Corona'), has completed the sale of its hydroelectric

TORONTO, ONTARIO -- (Marketwire) -- 03/01/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB)(LMA: DIB) ('Dia Bras' or the 'Company') is pleased to announce that its common shares were listed for trading on the Bolsa de Valores de Lima S.A. ('BVL' or the 'Lima Stock Exchange'), the Lima Stock Exchange, on Wednesday, February 29th, 2012. The

TORONTO, ONTARIO -- (Marketwire) -- 02/29/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB) ('Dia Bras' or the 'Company') is pleased to report that continued drilling from the surface at its Promontorio mine ('Figure 1: Cusi Project Map View') has discovered more wide zones of disseminated silver mineralization. Additionally, the Company has

TORONTO, ONTARIO -- (Marketwire) -- 02/21/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB) ('Dia Bras' or the 'Company'), a Canadian listed mining company focused on precious and base metals in Peru and Mexico, announces that its Peruvian subsidiary, Sociedad Minera Corona S.A. ('Corona'), has executed a Memorandum of Understanding ('MOU') with

Ore Zones Extended Down Over 300 Meters Below Existing Workings

TORONTO, ONTARIO -- (Marketwire) -- 02/15/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB) ('Dia Bras') (the 'Company') is pleased to announce that drilling conducted at the Central Mine Area of its Yauricocha mine since September, 2011, has intersected at depth broad zones of high-grade mineralization, both of the polymetallic type and copper-silver type ore bodies.

TORONTO, ONTARIO -- (Marketwire) -- 02/08/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB) ('Dia Bras') (the 'Company') is pleased to announce its expanded 2012 exploration programme at the Yauricocha mine in Peru. The exploration programme is designed to expand known deposits and discover additional deposits, most of which highlight the strong

TORONTO, ONTARIO -- (Marketwire) -- 01/26/12 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB) ('Dia Bras' or the 'Company'), a Canadian listed mining company focused on precious and base metals in Peru and Mexico, today announced the appointment of Mr. Steven G. Dean as Chairman and Mr. Alberto Arias as Vice-Chairman of its Board of Directors. Mr

TORONTO, ONTARIO -- (Marketwire) -- 01/19/12 -- Dia Bras Exploration Inc. ('Dia Bras' or the 'Company') (TSX VENTURE: DIB) announces that it has made an application to have its common shares listed on the Bolsa de Valores de Lima (the Lima Stock Exchange). There can be no assurance that such application will be accepted and any such listing will