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DIA BRAS PRODUCTION FROM ITS BOLIVAR MINE PILOT PROGRAM EXCEEDS US$5.0 MILLION IN THE FIRST QUARTER OF 2006

Montréal, Québec, - April 4, 2006 -

Dia Bras Exploration Inc. (DIB-V) ("Dia Bras" or the "Company") is . is proud to present it first quarter 2006,  operation results from its Bolivar mine pilot mining program, in Chihuahua, Mexico.

The Company has just completed its most productive quarter since the start of its pilot program in February 2005, producing concentrate estimated at US$5.3 million based on effective zinc and copper prices of each month, including an estimate of US$2.37 million for the production of March 2006. The Q1 production value exceeds the forecasted amount of US$4.0 million due to higher zinc grade mined and to higher market prices for both zinc and copper over that period.

During the month of March 2006, the Company processed 7,983 dry metric tons (DMT) of ore at its Malpaso Mill facility - its best monthly performance - of ore at its Malpaso Mill facility, for a total of 22,461 DMT processed for the quarter ended March 31, 2006 (22,500 DMT forecasted tonnage). Since the last quarter of 2005, the Malpaso Mill capacity was increased to 300 tpd and has been running smoothly. Fine tuning performed since that time has allowed the mill to process over 350 tpd on several occasions during the quarter.

A total of 2,059 DMT of zinc concentrate and 618 DMT of copper concentrate were produced from the 7,983 DMT of ore averaging 16.3% Zn and 2.90% Cu. Recovery rates were 93.18% for zinc and 82.49% for copper. Direct operating costs for the month of March, including shipping of concentrate, are estimated at US$875,000.

In March, the pilot program completed its fourth consecutive month of positive cash flow from operations. Total estimated direct operating costs for the quarter were close to target and amounted to US$2.4 million.

Mining activities have entered the Brecha Linda on level 1 since the end of 2005, a zone of high grade zinc and copper mineralization where the current ore is currently being processed.

The Company’s total concentrate production is sold to MRI Trading AG (MRI), a Switzerland based privately owned commodity trading company, pursuant to a standard concentrate purchase agreement.

The pilot-mining program provides essential data on costs, logistics, grade, recovery and metallurgy that will serve for a feasibility study to be undertaken at the Bolivar property. Its short term objective is to generate sufficient cash flow from the production of zinc and copper concentrates to finance the development and exploration program at the Bolivar mine and elsewhere in the Bolivar project.

Bolivar Mine Pilot Program
Summary - Q1 2006

The Company forecasts the same production level of 22,500 DMT for the second quarter of 2006 with average ore head grades of 11.0% Zinc and 2.5% Copper for an estimated combined concentrate production value of US$4.0 million. Now that stable levels of production have been achieved, the Company intends to report on the Pilot Mining Program activities, on a quarterly basis unless major positive or negative events needs to be reported in the interim.

About Dia Bras
Dia Bras is a Canadian mining and exploration company focused on precious and base metals in the State of Chihuahua, northern Mexico. The Company is actively exploring and developing its three key assets – the Bolivar copper-zinc project, the newly acquired Cusi silver mining camp and the Promontorio property – in the world-renowned Sierra Madre mineral belt. The Company trades on the TSX Venture Exchange, under the symbol “DIB”.

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For further information contact:

Thomas L. Robyn
Executive Chairman
(514) 393-8875 ext. 241

or

Nicole Blanchard
Managing Partner
Sun International Communications
(450) 627-6600


The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this press release.

Forward-looking statements: Except for statements of historical fact, all statements in this news release, without limitation, regarding new projects, acquisitions, future plans and objectives are forward-looking statements which involve risks and uncertainties. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from those anticipated in such statements.