Riverside Resources Inc. and partner Mexigold Corp. are pleased to report the recent completion of drilling at the Pedernal Gold Project in Durango, Mexico, which intersected the upper part of a gold-bearing epithermal vein system. An initial seven holes were drilled, totaling 1,549 metres, to test three of the eight vein zones identified thus far through geologic prospecting, detailed mapping, soil sampling, ground geophysics and trenching on the property. The drilling has demonstrated favorable indications for both vein and potentially larger bulk tonnage mineralization styles. This was the first known drill program on Pedernal, and covered less than 10% of the 23,716 hectare mineral concession. Follow-up exploration can now take place to test additional target zones on the property, including expanding the Milpa target zone which has given the best gold-silver results so far.

Argentum Silver Corp. announces the completion of the first phase of the diamond-drilling program at its Coyote property, located in Jalisco Mexico. A total of 25 holes totaling 2,686 metres were drilled on the four identified vein zones: 11 holes on the El Tajo zone, 7 holes on the La Florida zone, 4 holes on the Bocancha zone and 3 holes on the La Colorada zone. The Company’s original drill program called for 19 holes to be drilled, however, the high-grades intercepted in hole 2012-3, which included 2.0 metres of 2,745 g/t silver (Ag), and in hole 2012-7, which included 1.2 metres of 1,645 g/t Ag, encouraged the company to increase the number of holes drilled to 25. Results from the first seven holes were announced by news releases dated February 29 and March 6, 2012. Argentum is currently awaiting assay results from the remaining 18 holes.

NWM Mining Corporation is pleased to provide an operational update for the first quarter of 2012, and to announce the declaration of commercial production at the Lluvia-Jojoba gold mine. The mine is now commissioned and cash-flow positive, and a ramp up of throughput is expected to continue in accordance with 2012 mine operating plans.

Endeavour Silver Corp. announced today that the Company set new records for silver and gold production in the First Quarter, 2012 from the Company’s two operating silver mines in Mexico, the Guanacevi Mine in Durango State and the Guanajuato Mine in Guanajuato State.

Timmins Gold Corp. reports record gold production of 21,532 gold ounces and a gold recovery ratio of 69% for its Q1 2012 fiscal quarter ended March 31. The recovery ratio is defined as the ratio of gold ounces produced divided by the number of contained gold ounces stacked over a specific period. Timmins Gold also produced 11,740 ounces of silver during the quarter.

Silver Bull Resources, Inc. is pleased to announce drill hole B11144 intercepted 8.45 meters of massive sulphide grading 16.98% Zinc, 5.45% lead, and 57.29g/t silver in a previously untested zone 500 meters to the north of the Shallow Silver Zone.

Urastar Gold Corp. reports assays from 13 reverse circulation drill holes resulting in significant new gold intersections on the La Juliana Deposit. The Juliana Gold project is located in the prolific Sierra Madre Gold Belt approximately 7 km from Alamos Gold’s flagship Mulatos Gold Mine (see location map at www.Urastargold.com ). New assay highlights include 20 ft grading 1.9 g/t Au from the 150 to 170 foot level (more details in table below).

Source Exploration Corp. is pleased to announce that it has filed a National Instrument 43-101 – Standards for Disclosure of Mineral Projects compliant technical report with respect to the Capricho property located in Sinaloa State, Mexico on SEDAR at http://www.sedar.com. The report, entitled “Technical Report on the Capricho Au-Ag Property, Sinaloa State, Mexico”, dated March 22, 2012 was prepared for the Corporation by Tim Twomey, a qualified person within the meaning of NI 43-101.The report has been posted on the Company’s website at http://www.sourceexploration.com.