Quaterra Provides Corporate Update

VANCOUVER, BRITISH COLUMBIA, Apr 10, 2012 (MARKETWIRE via COMTEX) — Quaterra Resources today provided a corporate update including anticipated timing for the completion of work on projects listed below.

Oremex Silver to Commence Follow Up Drill Program at the Chalchihuites Silver Project

Oremex Silver Inc. is pleased to announce the completion of the underground and surface mapping and sampling at the Chalchihuites silver project held by its wholly owned Mexican subsidiary, Minera Mantos S. de R.L. de C.V. Nine mantos and four structures were identified. The combined surface and underground sampling indicated grades of up to 3,450 g/t silver, 3.4 g/t gold, 0.30% copper, 20.6% lead and 12.5% zinc, over channel sample lengths ranging from 0.22 meters to 3.90 meters.

Northair Partners with Focus Ventures to Advance the El Reventon Silver Project, Mexico

International Northair Mines Ltd. and its wholly owned subsidiary Grupo Northair de Mexico, S.A. de C.V. announces that the Company has signed a binding agreement with Focus Ventures Ltd. whereby Northair will grant Focus and its subsidiary the option to acquire 65% interest in the Company’s El Reventon Silver Project located in the State of Durango, Mexico.

Cream Minerals Provides Update on Timing of the Nuevo Milenio Mineral Resource Estimate

The independent mineral resource estimate for Nuevo Milenio continues to be advanced. Challenges encountered in providing data to the consultant in a timely manner have impacted progress on the mineral resource estimate. Given the large amount of data involved including over 32,000 metres of drilling, a significant volume of surface samples, trench samples, underground channel samples as well as properly identified location coordinates for all but the drilling data combined with reviews and fact checks were significantly more time consuming than anticipated. The Company anticipates the release of the mineral resource by May month end 2012.

Cortez Gold Corp. – Share Purchase Agreement Terminated

Vancouver, British Columbia – Cortez Gold Corp (TSXV: CUT) (“Cortez” or the “Company”) announces that it has delivered its notice to Cortez Minera Mexicana S.A de C.V (“Minera Mexicana”), notifying them that the Company will not be proceeding with the transaction to acquire 100% of the issued and outstanding shares of Minera Mexicana. Minera Mexicana is a private Mexican company that holds the option to purchase a 100% interest in the Petlacala gold/silver project in Guerrero State, Mexico (see press releases of April 12 and August 23, 2010).

New Director for Starcore’s Board

Vancouver, B.C. — Starcore International Mines Ltd. (the “Company”) is pleased to announce that Serge Depatie of Montreal, Quebec has joined the Board of Directors as a ninth director. The Starcore Board now includes four independent Directors.

VVC Exploration Amends the Expiry Date and Pricing of 9,521,429 Warrants

VVC EXPLORATION CORPORATION announces the amendment of the expiry date and exercise price of 9,521,429 Series S Warrants to purchase 9,521,429 shares @ $0.12 per share, as permitted under the new TSX Venture Exchange Policy. The warrants, which were expiring on April 11, 2012, will now expire on April 11th, 2013, and will be exercisable at $0.12 per share up to April 11th, 2012 and thereafter at $0.18 per share. These warrants were attached to a private placement of $770,000 approved by the TSXV in April 2011. The warrants are not currently in-the-money, however, since November 2011, two warrant holders exercised an aggregate of 1,478,571 warrants. The TSXV consented to this warrant extension and price adjustment on April 5.

Gold Resource Corporation First Quarter Production Sets Record With 53% Increase

Gold Resource Corporation announced its preliminary production results for the first quarter ended March 31, 2012 of approximately 30,500 ounces precious metal gold equivalent (AuEq). Production increased approximately 53% from the previous quarter, and 308% from first quarter of 2011, establishing new record production for the Company. Gold Resource Corporation is a low-cost gold producer with operations in the southern state of Oaxaca, Mexico. The Company has returned over $43 million to shareholders in monthly dividends since declaring commercial production July 1, 2010 and now offers shareholders the option to convert their cash dividends into physical gold or silver.

Primero Provides Notice of Release of First Quarter 2012 Results and Annual General and Special Meeting of Shareholders

Primero Mining Corp. announced today that it plans to release its first quarter 2012 results on Thursday, May 3, 2012. The Company also announced that it will host its Annual General and Special Meeting of Shareholders on Monday, May 28, 2012. Primero has filed its 2011 management’s discussion and analysis of financial condition and results of operations and 2011 audited financial statements on SEDAR (www.sedar.com) and Edgar (www.sec.gov). Shareholders may request, free of charge, a hard copy of the audited financial statements upon request to [email protected].

Major Drilling Group International Inc. is one of the world’s largest drilling services companies primarily serving the mining industry. Established in 1980, Major Drilling has over 1,000 years of combined experience and expertise within its management team alone.

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Maza Drilling is a Mexican company established in 2007 in Mazatlán, Sinaloa. Our Canadian founder, Mr. Guy de Launiere, has over 20 years of international experience managing diverse drilling operations. Maza Drilling strives to compete at the highest levels in terms of recovery, effectiveness, efficiency, and affordability at every project while keeping at the forefront of technology to meet our customer’s needs in this demanding market.