Mercator Minerals Reports First Quarter 2012 Production Results

Mercator Minerals Ltd. is pleased to announce the production results for the three months ended March 31, 2012 from its wholly-owned Mineral Park Mine in Arizona. Production for the quarter totalled 20.1 million pounds of copper equivalent(i), which consisted of 9.9 million pounds of copper in concentrates and cathode copper, 2.3 million pounds of molybdenum and 211,431 ounces of silver.

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.

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