Dia Bras Exploration Inc. (DIB-V) ("Dia Bras or the "Company") registered a record 12,336 dry metric tonnes (DMT) in March to close the first quarter of 2007 with 30,014 DMT processed and US$5.2 million in concentrate production value at its Bolivar Mine pilot-mining program in Chihuahua, Mexico.

During the first quarter ended March 31, 2007, the Company processed 30,014 DMT of material averaging 6.77% zinc and 1.34% copper, and produced 2,987 DMT of zinc concentrate and 1,172 DMT of copper concentrate for a total estimated production value of $6.1 million (US$5.2 million) (compared to $6.1 million (US$5.3 million) in Q1-2006).  Operating cash costs amounted to $4.5 million (US$5.8 million) (compared to $2.75 million (US$2.4 million) in Q1-2006). Increased tonnage of material transported from the Bolivar site to the Malpaso mill as well as one-time new circuit start-up costs, account for the increase in costs.

Total mill throughput has increased significantly and reached a monthly high of 12,336 DMT as the Company started testing the recently installed 500 tpd “El Triunfo” circuit. The overall capacity of the Malpaso mill was increased to 850 tpd and the new circuit achieved a maximum daily throughput of 561 tonnes. Total tons of material processed averaged just over 10,000 per month. Commissioning and fine-tuning of the El Triunfo circuit continues.

The grades obtained in the first quarter were below the Company’s internal forecasts of average grades of 7.5% for zinc and 1.5% for copper and below the grades for the same period of 2006 of 16.3% for zinc and 2.9% for copper. At that time the Company had mined a high grade zone and wanted to benefit from high metal prices to increase its cash position.

During the first quarter of 2007, Dia Bras focused on accessing the down-plunge portions of the high grade Selena breccia and Rosario body (see press release of March 21, 2007) by developing a ramp from Level 7 to Level 8 (a new level) as well as drifts along that level.  In addition, work continued on the ramp from Level 2 to Level 3 to access the down-dip extensions of the Brecha Linda.  As a result, development rock has been shipped to the Company’s Malpaso mill, with the resultant lower mill-feed grades for the quarter.  Mineralized rock from the high-grade bodies will be processed at Malpaso during the second quarter.

The Company anticipates that concentrate production will increase during the second quarter due to increased mill feed grades.  Combined with higher copper and zinc prices, production value is also expected to increase. If metal prices stay at the present level, the pilot-mining program at Bolivar should generate sales of approximately $30 million (US$25.6 million).

“Dia Bras is in a strong position at this moment”, says Réjean Gosselin, President and CEO, “The development work completed during the first quarter provides access to the high grade Selena and Rosario bodies for the second quarter production. This will raise our average production grades above our forecast levels as we move from development to mining of these bodies.  In addition, we have a solid cash position, with working capital at the end of the first quarter of $19.7 million and cash on hand of $16.0 million.  This year will be another exciting year for the Company as we expand our exploration drilling programs and access additional high grade bodies.”

Bolivar Pilot-Mining

Summary of the First Quarter 2007 (in US dollars)

Average metal prices: Zn US$ 1.57/lb Cu: US$2.69/lb				Total Estimated Production (1)	Estimated Operating Cash Cost (1) US$ (Millions)
Material Processed			Tonnes	US$ (Millions)
Actual			30,014	5.2	3.8
Forecast			24,000	4.2	3.2
Over (under)			6,014	1.0	0.6
Zinc	Average Grade	Recovery	Zn Concentrate Production (DMT)	Production Value in US$ (Millions) (1)
Actual	6.77%	84.61%	2,987	3.6
Forecast	7.50%	92.20%	2,718	3.0
Over (under)	(0.83)%	(7.59)%	269	0.6
Copper	Average Grade	Recovery	Cu Concentrate Production (DMT)	Production Value in US$ (Millions) (1)
Actual	1.34%	81.62%	1,172	1.6
Forecast	1.50%	79.20%	967	1.2
Over (under)	(0.16%)	2.42%	205	0.4

Summary of the First Quarter 2006 (in US dollars)

Average metal prices Zn: US$ 0.95/lb Cu: US$2.12/lb Material Processed				Total Estimated Production (1)	Estimated Operating Cost US$ (Million)
			Tonnes	US$ (Million)
Actual			22,469	5.3	2.4
Forecast			22,500	4.5	2.5
Over (under)			(31)	0.8	(0.1)
Zinc	Average Grade	Recovery	Zn Concentrate Production (DMT)	Production Value in US$ (Millions) (1)
Actual	13.62%	92.12%	4,898	3.7
Forecast	11.00%	85.00%	3,700	2.6
Over (under)	2.62%	7.12%	1,198	1.1
Copper	Average Grade	Recovery	Cu Concentrate Production (DMT)	Production Value in US$ (Millions) (1)
Actual	2.50%	78.04%	1,483	1.6
Forecast	2.60%	75.00%	1,600	1.4
Over (under)	(0.1%)	3.04%	(117)	0.2

Financial Results (unaudited)

	Quarter ending March 31, 2007	Quarter ending March 31, 2006
	US$	US$
Net smelter production value	5.2 M	5.3 M
Direct operating cash costs	3.8 M	2.4 M
Direct operating cash margin	1.4 M	2.9 M

Net smelter production value and
Cash Operating Costs / Tonne Processed   (unaudited)

	Quarter ending March 31, 2007	Quarter ending March 31, 2006
	US$	US$
Net smelter production value (1)	173.25	234.70
Direct operating cash costs (1)	126.20	104.70
Gross margin before amortization (1)	47.05	130.00

1. 
   Non-GAAP measures: The Company reports production value, production costs, net smelter revenue per tonne, direct operating cash costs per tonne and gross margin before amortization per tonne even if it is a non-GAAP measure to inform about the approximate value of the quarter sales, isolate the measure of pilot-mining direct operation costs activities less amortization and depreciation. The Company believes this is useful supplemental information however it should not be considered as a substitute for measure of performance prepared in accordance with GAAP.

The Company’s total concentrate production is sold to MRI Trading AG (MRI), a Swiss-based, privately-owned commodity trading company, pursuant to a standard concentrate purchase agreement. Total billings to MRI during the quarter amounted to $6.5 M (US$5.4 M) and include final settlements from 2006 shipments, which were impacted by decreases in metal prices in early 2007.

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

It is important to note that Bolivar is not at a commercial production stage. The completion of a feasibility study is required to confirm the economic viability of a property before it is brought into commercial production. The Company expects completing its exploration program on the Bolivar property and extensions in order to achieve a feasibility study in 2007.

About Dia Bras
Dia Bras is a Canadian exploration mining company focused on precious and base metals in the State of Chihuahua, in northern Mexico. The Company is committed to developing and adding value to its assets – the Bolivar copper-zinc project and the Cusi silver mining camp. The Company trades on the TSX Venture Exchange, under the symbol “DIB”.

For further information on Dia Bras contact:

Thomas L. Robyn Executive Chairman Dia Bras Exploration (514) 393-8875

Réjean Gosselin President & CEO Dia Bras Exploration (514) 393-8875

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

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 that 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.

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