Sierra Metals Inc.

TSX Venture Exchange - DIBBolsa de Valores de Lima - DIB# 23-2012TORONTO, July 16, 2012 /CNW/ - Dia Bras Exploration Inc. (TSX-V:DIB) (BVL:DIB) ("Dia Bras" or the "Company") is pleased to announce its production results for the second quarter of 2012.Press Release Highlights:Total of 323,396 tonnes processed in the second quarter of 2012 compared to 37,408 tonnes in the same period of 2011.Total silver ("Ag") production [...]

Dia Bras and Plexmar, following renewed discussions are pleased to announce that Dia Bras and Plexmar have entered into a letter of intent pursuant to which Dia Bras will acquire all of the outstanding common shares of Plexmar at a price of $0.01 per common share, payable in cash, and all outstanding warrants and options to acquire common shares of Plexmar will be cancelled for no consideration by way of a statutory plan [...]

/NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR RELEASE, PUBLICATION, DISTRIBUTION OR DISSEMINATION IN THE UNITED STATES/TSX Venture Exchange - DIBBolsa de Valores de Lima - DIBTORONTO, June 15, 2012 /CNW/ - Dia Bras Exploration Inc. (TSX-V:DIB) (BVL:DIB) ("Dia Bras"), a Canadian mining company focused on precious and base metals in Peru and Mexico, announces that the letter of intent dated April 17, 2012 [...]

Dia Bras is pleased to announce that it has closed its previously announced C$45 million private placement of common shares at an offering price of C$3.00 per share. The Company plans to use the proceeds of the Offering mainly to accelerate exploration and mine development at Cusi, its silver mine in Mexico; double production at Bolivar, its copper and silver mine in Mexico, by accelerating mine development and increasing [...]

TSX Venture Exchange - DIBBolsa de Valores de Lima - DIBVANCOUVER, May 31, 2012 /PRNewswire/ - Dia Bras Exploration Inc. (TSXV: DIB) (BVL: DIB) ("Dia Bras") (the "Company") is pleased to announce the filing of its audited Financial Statements and Management Discussion and Analysis ("MD&A") for the first quarter of 2012. All amounts are presented in Canadian dollars unless otherwise stated. For the full Financial [...]

Dia Bras and Plexmar announce today that the Hans XX concession is no longer subject to the option granted by Plexmar to Dia Bras in connection with Dia Bras and Plexmar's previously announced letter of intent and plan of arrangement. As described in a press release issued on April 23, 2012, Plexmar granted Dia Bras the Concession Option providing Dia Bras with the right to acquire the Bolsa del Diablo and Hans XX [...]

TSX Venture Exchange - DIBBolsa de Valores de Lima - DIB# 17-2012TORONTO, May 14, 2012 /PRNewswire/ - Dia Bras Exploration Inc. (TSX-V:DIB) ("Dia Bras" or the "Company") is pleased to report that continued surface and underground drilling at its Promontorio mine (Figure 1: Cusi Project Map View) ...

Dia Bras is pleased to announce a C$45 million private placement of common shares at an offering price of C$3.00 per share. The Offering will be conducted on a best efforts basis through a syndicate of agents led by RBC Capital Markets. The Company anticipates that a minimum of 7,500,000 common shares representing gross proceeds of C$22.5 million will be purchased by Arias Resource Capital Fund II L.P. ("ARCF II") and [...]

TSX Venture Exchange - DIBBolsa de Valores de Lima - DIB # 15-2012TORONTO, May 3, 2012 /PRNewswire/ - Dia Bras Exploration Inc. (TSX-V:DIB) (BVL: DIB) ("Dia Bras" or the "Company") is pleased to announce that its drilling programme for resource expansion at the Yauricocha mine in Peru continues to ...

TORONTO, May 2, 2012 /PRNewswire/ - Dia Bras Exploration Inc. (TSX-V:DIB) (BVL:DIB) ("Dia Bras" or the "Company") is pleased to announce its production results for the first quarter of 2012.Press Release Highlights:Total of 286,022 tonnes processed in the first quarter of 2012 compared to 30,867 ...