Dia Bras Exploration Inc. (DIB-V) (Dia Bras or the "Company") announced today it has met its production targets on the mining and milling operation at the Bolivar project in Northern Mexico.

The Company’s objective is to mill 9,000 metric tons of high grade material at 4% copper and 20% zinc by September. The high grade zones around holes 85 and 87 with grades up to 6% copper and 28% zinc will be reached within 30 days. Another pod of similar grade has been intercepted over 25 meters by the sixth level drift.

Operating Results
The Bolivar property produced 5,100 metric tons in April. Current production is from only two faces at Level Six.  Development at Level One is now on stream and two more working faces will be opened up next week. The objective is to mine the deposit from five economic faces by July.

The Malpaso mill has a capacity of 200 tpd and during April it processed 3,509 metric tons of ore at an average head grade of 1.91% Cu and 6.80% Zn. All ore shipped to the mill was development ore. During April, 379 dry metric tons (DMT) of zinc concentrate and 176 DMT of copper concentrate were produced. An additional 251 DMT of zinc concentrate were shipped to the Manzanillo port facilities.

The new equipment for the expansion of the mill to 300 tpd has been purchased; the installation will begin shortly with completion scheduled for September. The company expects to mill 5,000 metric tons at grades improving to 3% Cu and 11% Zn in the month of May, 4% Cu and 16% Zn in June, and grades of 4% Cu and 20% Zn starting in July.

Exploration and Mine Development
The drill program has tested the New Bolivar South Zone where Cu, Ag, Au mineralization in skarn was discovered and excellent results were obtained as indicated in the table below. The next drill program is targeted in the deposit area to increase the size of the higher grade material readily available by underground workings. Exploration will also continue in the surroundings to evaluate the Lilly, Cascada and Rosario prospects.  In order to better understand the skarn system at Bolivar, a mineralogical study will be performed by Dr. Meinert. This study will be the foundation of the next exploration program in the Bolivar district.

Hole No.	Segment	From  (m)	To (m)	Width  (m)	Au g/t	Ag g/t	Cu  %
DIA-111-05*		150.60	151.60	1.00	0.092	18.70	0.51
DIA-112-05	A	241.00	251.00	10.00	0.4733	11.9643	1.2740
DIA-113-05	A	102.00	104.00	2.00	0.2370	19.0500	0.6075
DIA-118-05	A	125.00	127.00	2.00	1.8325	17.7750	1.2250
DIA-118-05	B	141.00	142.00	1.00	0.4400	17.8000	1.7400
DIA-121-05	A	200.00	215.00	15.00	0.1339	27.8400	1.2466
DIA-122-05	A	126.00	128.00	2.00	0.9075	20.0000	1.8700
DIA-124-05	A	233.50	241.50	8.00	0.4134	23.2600	1.2958
DIA-124-05	B	246.50	247.50	1.00	0.3040	7.2000	1.3100
DIA-125-05	B	160.00	171.00	11.00	1.1900	0.0600	1.6900
DIA-125-05	C	180.00	181.00	1.00	1.5150	40.2000	1.5800

* Results were previously announced on April 13, 2005

About Dia Bras
Dia Bras is a Canadian mining exploration company focused on precious and base metals in the State of Chihuahua, Mexico. The Company will continue exploration and the active development of its two key projects – Bolivar and Promontorio – located in the Sierra Madre precious metal belt. The Company is traded on TSX Venture Exchange, under the symbol “DIB”.

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For further information contact:

Réjean Gosselin
President

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