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Dia Bras Confirms High-Grade Mineralization at San Patricio Property

10:47 EDT Tuesday, May 11, 2010

MONTREAL, QUEBEC--(Marketwire - May 11, 2010) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) (Dia Bras or the Company) is pleased to announce results of sampling from the San Patricio target, which is one of several targets at the Bacerac project. The Bacerac project consists of 48,500 hectares located in northeastern Sonora State near the border with Chihuahua State, Mexico, and was acquired with the EXMIN business combination.

"The San Patricio target is one of the first targets acquired from EXMIN to be advanced to the drill stage," stated Daniel Tellechea, President and CEO of Dia Bras. "Our target is an open-pitable deposit of considerable size. We expect more drill targets to be generated on the EXMIN properties this year, which will bring more advanced projects into our pipeline of projects, thereby increasing the chances of success."

Dia Bras has commenced an exploration program at the Bacerac concession in order to evaluate its mineral occurrences and to bring the San Patricio target to the drilling stage. The San Patricio target area consists of a 400 m by 600 m area of alteration and mineralization surrounding a series of small mine workings. The San Patricio mine, in the center of the mineralized area (see attached map http://www.diabras.com/en/newscenter/2010/SanPatricio.pdf), consists of a small working developed on a brecciated structure striking northeast. Sampling across the structure of the mine by EXMIN yielded high metal grades, including an interval of 9.5 metres with weighted averages of 4.95 g/t Au, 2,128 g/t Ag, 3.9 % Cu, and greater than 10.9 % Pb (samples 6123-6126). See EXMIN news release of December 11th, 2007.

Confirmation sampling by Dia Bras over an interval of 8.3 m during the present exploration program yielded weighted averages of 2.28 g/t Au, 1,722 g/t Ag, 1.0% Cu, and 6.0% Pb (samples 11017-11019). Systematic sampling along a grid has identified an area measuring about 100 metres in a northwesterly direction around the San Patricio mine; further sampling is in progress to further define the size of the mineralized zone (see sample locations on attached map).

The project area contains Tertiary volcanic rocks consisting of rhyolitic and andesitic flows and breccias that overlie probable Cretaceous sedimentary rocks; both units locally exhibit strong alteration. Mineralization is commonly associated with strongly silicified rhyolitic rocks near the base of the unit at or near the contact with underlying sedimentary rocks. Veins are locally important. There are multiple small mines and prospects in the region.

San Patricio contains a small mine worked informally by "gambusinos" in the past. Sampling has yielded gold, silver and base metal values in a relatively flat-lying tabular breccia or manto formed at the base of rhyolitic volcanic rocks where they overlie limestone. This mineralized body contains quartz and calcite in abundant veins with no preferred orientation (stockwork breccia) as well as in breccia cement.

A large area of alteration and mineralization surrounds the San Patricio mine area and provides a large exploration target. The area is poorly exposed and is partly covered by soil