David H. Brett, President and CEO, Pacific Bay Minerals Ltd. (TSX VENTURE:PBM)
(the "Company") reports that the Company has discovered a large, mineralized
zone with significant uranium values at its 100% owned Regalo property in Chubut
Province, Argentina. Assay results show uranium values ranging between 0.002 and
0.14% U (1,382 ppm or 2.8 pounds per ton) in rock geochemical samples from an
area measuring over 1 square kilometre. Within this area widespread
scintillometer readings of 1,500 to 2,500 counts per second have been recorded
from rocks belonging to the favourable Los Adobes Formation. A full table of
assay results is outlined below. A follow-up trenching, mapping and sampling
program is planned for May.


This new uranium discovery was made during a March, 2011, helicopter-supported
reconnaissance of 23 high-priority airborne uranium anomalies outlined in a 2008
survey over the entire 400-square kilometre property. The results from the
program identified a number of anomalous zones in an area that is approximately
20km north-east the government owned, 15 million pound Cerro Solo uranium
deposit. It is interesting to note that the uranium mineralization at this new
discovery is hosted in sandstones of the Bardas Coloradas Member of the Los
Adobes Formation, not the Arroyo Del Pajaritos Member that hosts the Cerro Solo
and other uranium deposits in the area. Thus, this discovery opens up a whole
new exploration model and new potential for the property.




------------------------------------------------------
                                               Uranium
Sample Number   Uranium (ppm)  Uranium (%)    (lbs/sdt)
------------------------------------------------------
B3-1                     387       0.039%         0.77
------------------------------------------------------
B3-2                     655       0.066%         1.31
------------------------------------------------------
B3-3                     341       0.034%         0.68
------------------------------------------------------
B3-4                     865       0.087%         1.73
------------------------------------------------------
B3-5                     531       0.053%         1.06
------------------------------------------------------
B3-6                   1,382       0.138%         2.76
------------------------------------------------------
B3-7                     853       0.085%         1.71
------------------------------------------------------
B3-8                     724       0.072%         1.45
------------------------------------------------------
B3-9                      20       0.002%         0.04
------------------------------------------------------
B3-10                    941       0.094%         1.88
------------------------------------------------------
B3-11                  1,227       0.123%         2.45
------------------------------------------------------



"This is an exciting discovery," said Pacific Bay CEO David H. Brett. "These
samples were collected from outcrops over a large area. The next step is to
carry out a trenching program for more detailed sampling and mapping
information"


The technical disclosures in this news release were reviewed and approved by
Doug Blanchflower, P.Geo., a Qualified Person, as defined by National Instrument
43-101.


Pacific Bay Minerals Ltd.

David H. Brett, MBA, President & CEO
Pacific Bay Minerals (TSXV:PBM)
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