Sierra Metals Announces Update on Polo y Ron Minerals Option Agreement

Sierra Metals Inc. is pleased to report that a Federal Court in the State of Chihuahua has granted to the Company a temporary suspension of the adverse resolution issued by the State Court of Chihuahua, Mexico. A final verdict by the Federal Court is pending. The Company will continue to vigorously defend this claim by applying the proper legal resources necessary to defend its position. Sierra continues to believe that the original claim is without merit.

Mundoro 2012 Year End Financial Results & Corporate Update

Mundoro Capital Inc. announces the filing of the Company’s Annual Audited Financial Results for fiscal year ended December 31, 2012. Highlights provided in this news release should be read in conjunction with the Company’s Annual Audited Financial Statements and the Management Discussion and Analysis, which is available on SEDAR at www.sedar.com. All dollar amounts are in U.S. dollars unless otherwise stated.

Mercator Considers Selling Stake in Mexico Copper Project

Mercator Minerals Ltd. (ML), which mines copper in Arizona, is considering options including the sale of a minority stake of about 25 percent in its El Pilar project in Mexico to a partner that would help fund the mine’s development.

Westminster Resources Ltd. : Drilling at Cumbral-San Bartolo Underway; Sonora, Mexico Land Package Expanded

Westminster Resources Ltd. announces that diamond drilling of the 3D-IP Montoso
chargeability anomaly, Sonora, Mexico, is in progress. The multiple square kilometer porphyry deposit style of chargeability patterns at Montoso are associated with copper-gold-silver soil anomalies related to well developed iron-oxide (hematite, goethite) and sericite-clay alteration zones and leached cappings.

El Tigre Silver Corp. Announces Private Placement

El Tigre Silver Corp. is pleased to announce a non-brokered private placement for up to 2,000,000 units of the Company at a price of $0.25 per Unit for aggregate cash proceeds of $500,000. Each Unit will be comprised of one common share and one-half of a common share purchase warrant. Each whole Warrant will entitle the holder to acquire an additional common share of the Company for a period of 24 months from the date of issue at a price of $0.38, provided that, if over a period of 20 consecutive trading days after the expiry of the hold period on the warrants, the daily volume weighted average trading price of the common shares of the Company on the TSX Venture Exchange (or such other stock exchange on which such shares are listed) is greater than $0.50, then at the Company’s discretion, it may, within 10 days of such 20 day period, accelerate the expiry date of the Warrants to a date 30 days after the date of the notice.

Catalyst Copper Corp. Closes Private Placement

Catalyst Copper Corp. is pleased to announce today that it has closed the first tranche, of 4,066,667 units for proceeds of $244,000, of its previously announced non-brokered private placement of 10,000,000 units of the Company at a price of $0.06 per unit.

Mammoth Receives Additional Assay Results from Samples Taken from Tenoriba Property

Mammoth Resources Corp. is pleased to report that it has received additional assay results from samples taken from its geological team exploring the company’s Tenoriba Property, located in the prolific Sierra Madre precious metal belt in south western Chihuahua State, Mexico (refer to the company’s web site www.mammothresources.ca, for a detailed location map).

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