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"Yamana Provides Development Stage Projects Update

09/14/2009
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PR 20 - Mercedes and Agua Rica.pdf

TORONTO, Sept. 14 /CNW/ - YAMANA GOLD INC. (TSX:YRI; NYSE:AUY; LSE:YAU) today announced updates to its development projects, Mercedes in Mexico and Agua Rica in Argentina.

Mercedes, Mexico

Drilling continued at Mercedes, focusing primarily on the central and northern portions of the Las Barrancas Trend, the Northwest Extension at Mercedes, and the Lupita vein zone. Drilling year to date totals 28,201 metres in 79 core holes.

Las Barrancas
Drilling on the Barrancas Central and North targets continues to intersect multiple epithermal quartz-carbonate vein and stock work zones ranging from 1.0 to 23.0 metres in true width, in an area covered by 70-120 metres of post-mineral volcano-sedimentary rocks. Gold values in excess of 2.0 g/t gold equivalent (the current cut-off grade) have been intersected along most of a 900 metre strike length, covering a maximum vertical range of 180 metres (910 to 1,090 metre elevations). Drilling continues to intersect certain zones of high-grade gold mineralization (up to 16.0 g/t gold equivalent over a true width of 5.0 metres).

Significant drill results since the last update provided in the Company's June 17, 2009 press release (using a 2.0 g/t gold equivalent cutoff) include:

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Regards, Ken (Long AUY)