U3O8 Corp. (TSX VENTURE:UWE), a Canadian-based company focused on exploration
and resource expansion of uranium and associated commodities in South America,
reports results from the final 32 holes completed in the resource drilling
campaign on the Aricheng West structure in the Kurupung Batholith in Guyana
(Figure 1). The National Instrument 43-101 ("NI 43-101") resource estimate on
Aricheng West is expected to be released in March 2012.


"These infill drill results add to the mounting evidence that the Kurupung
Project could host a large uranium system comparable in size to other
albitite-hosted deposits such as Coles Hill in Virginia, Michelin in Labrador
and Valhalla in Australia," said Dr. Richard Spencer, U3O8 Corp's President and
CEO. "In the past year, we have dramatically increased our uranium resources in
key projects in Colombia and Argentina, and the forthcoming NI 43-101 resource
from the Kurupung will further contribute to U3O8 Corp's strong growth profile
as we advance from a junior explorer to the ranks of a handful of mid-sized
uranium companies."


Table 1 - Assay Results for Aricheng West

Summary of significantly mineralized intercepts cut in the final 32 bore holes
completed in the infill drilling program at Aricheng West (Figure 2).




----------------------------------------------------------------------------
                      Intercept                         Grade               
             ---------------------------------------------------------------
Bore             From    To     Interval    Estimated True     U3O8     U3O8
Hole              (m)   (m)          (m)     Thickness (m)      (%)   (lb/t)
----------------------------------------------------------------------------
ARW-075                           No significant results                    
----------------------------------------------------------------------------
                   51    62           11             10.83    0.103     2.27
             ---------------------------------------------------------------
ARW-076            85    97           12             11.82    0.045     0.99
             ---------------------------------------------------------------
                  100   108            8              7.88    0.040     0.88
----------------------------------------------------------------------------
ARW-077                           No significant results                    
----------------------------------------------------------------------------
ARW-078             8    12            4              2.41    0.053     1.16
----------------------------------------------------------------------------
ARW-079            36    45            9              5.79    0.061     1.35
             ---------------------------------------------------------------
                   68    72            4              2.57    0.091     1.99
----------------------------------------------------------------------------
ARW-080                           No significant results                    
----------------------------------------------------------------------------
                   81    88            7              4.50    0.098     2.15
             ---------------------------------------------------------------
ARW-081           233   241            8              5.14    0.096     2.12
             ---------------------------------------------------------------
                  270   278            8              5.14    0.074     1.62
----------------------------------------------------------------------------
ARW-082            74    88           14             11.03    0.071     1.57
----------------------------------------------------------------------------
ARW-083            35    37            2              1.46    0.081     1.78
             ---------------------------------------------------------------
                   82    85            3              2.19    0.056     1.23
----------------------------------------------------------------------------
ARW-084            82    91            9              5.16    0.066     1.46
----------------------------------------------------------------------------
ARW-085            98   103            5              3.94    0.050     1.09
----------------------------------------------------------------------------
                  124   131            7              4.86    0.076     1.66
             ---------------------------------------------------------------
ARW-086           205   207            2              1.39    0.176     3.88
             ---------------------------------------------------------------
                  249   260           11              7.64    0.080     1.75
----------------------------------------------------------------------------
ARW-087            27    34            7              4.59    0.053     1.17
----------------------------------------------------------------------------
ARW-088                           No significant results                    
----------------------------------------------------------------------------
ARW-089           158   164            6              3.53    0.040     0.87
             ---------------------------------------------------------------
                  260   264            4              2.35    0.054     1.18
----------------------------------------------------------------------------
ARW-090            89    95            6              3.86    0.124     2.72
----------------------------------------------------------------------------
ARW-091                           No significant results                    
----------------------------------------------------------------------------
ARW-092           295   299            4              2.57    0.050     1.09
             ---------------------------------------------------------------
                  322   327            5              3.21    0.049     1.07
----------------------------------------------------------------------------
ARW-093            41    52           11              6.47    0.061     1.35
----------------------------------------------------------------------------
ARW-094            20    23            3              1.72    0.045     0.99
----------------------------------------------------------------------------
ARW-095            91    96            5              3.21    0.041     0.91
----------------------------------------------------------------------------
ARW-096            57    60            3              1.93    0.066     1.45
             ---------------------------------------------------------------
                   68    72            4              2.57    0.046     1.01
----------------------------------------------------------------------------
ARW-097            10    27           17             13.02    0.064     1.41
             ---------------------------------------------------------------
                   30    54           24             18.39    0.111     2.44
----------------------------------------------------------------------------
ARW-098            84    92            8              5.03    0.088     1.94
             ---------------------------------------------------------------
                  123   140           17             10.70    0.049     1.08
----------------------------------------------------------------------------
ARW-099                           No significant results                    
----------------------------------------------------------------------------
ARW-100                           No significant results                    
----------------------------------------------------------------------------
ARW-101                           No significant results                    
----------------------------------------------------------------------------
ARW-102           153   158            5              2.72    0.080     1.76
----------------------------------------------------------------------------
ARW-103                           No significant results                    
----------------------------------------------------------------------------
ARW-104                           No significant results                    
----------------------------------------------------------------------------
ARW-105                           No significant results                    
----------------------------------------------------------------------------
                   25    30            5              3.94    0.085     1.86
             ---------------------------------------------------------------
                  108   119           11              8.67    0.084     1.84
             ---------------------------------------------------------------
ARW-106           228   241           13             10.24    0.052     1.14
             ---------------------------------------------------------------
                  285   300           15             11.82    0.059     1.30
             ---------------------------------------------------------------
                  310   328           18             14.18    0.043     0.94
----------------------------------------------------------------------------



Note: lbs/t is an abbreviation for pounds per tonne.

Potential quantity and grade are based on drill results that define the
approximate length, thickness, depth and grade of the target area, but are
considered conceptual in nature. The drilling reported in this release
constitutes infill drilling on the Aricheng West structure with the aim of
defining a mineral resource. No mineral resource has been completed on the
Aricheng West structure to date, and it is uncertain if further exploration will
result in such target being delineated as a mineral resource.


Aricheng West Structure

Uranium at Aricheng West is concentrated in a set of near-vertical, sheet-like
breccias that have an easterly trend that extends over one kilometre and is
still open along strike. The principal mineralized structures correspond closely
with corridors of low magnetism that extend beyond the area that has been
drilled (Figure 2). Extensions to these weakly magnetic corridors constitute
targets that will be ranked against other targets for future exploration
drilling. Mineralization at Aricheng West extends from the near-surface
saprolite, which averages 20 metres ("m") thick, to at least 340m below surface.


Quality Assurance & Quality Control

QA/QC procedures for Aricheng West are the same as those used in U3O8 Corp's
exploration elsewhere in the Kurupung Project as described in the press release
dated April 20, 2011, available on the company's web site at www.u3o8corp.com
and on SEDAR at www.sedar.com.


Dr. Richard Spencer, President and CEO of U3O8 Corp., a Qualified Person within
the definition of that term in NI 43-101 of the Canadian Securities
Administrators, had overall responsibility for target and drill-site selection
at the Aricheng West target. Dr. Spencer has supervised the preparation of, and
verified, the technical information in this release.


About U3O8 Corp.

U3O8 Corp. is a Toronto-based exploration company, focused on exploration and
resource expansion of uranium and associated commodities in South America - a
promising new frontier for uranium exploration and development. U3O8 Corp. has
one of the most advanced portfolios of uranium projects in the region comprising
NI 43-101 compliant resources in Guyana, Argentina and Colombia.


Forward-Looking Statements

Certain information set forth in this news release may contain forward-looking
statements that involve substantial known and unknown risks and uncertainties.
These forward-looking statements are subject to numerous risks and
uncertainties, certain of which are beyond the control of U3O8 Corp., including,
but not limited to, the impact of general economic conditions, industry
conditions, volatility of commodity prices, risks associated with the
uncertainty of exploration results and estimates and that the resource potential
will be achieved on exploration projects, currency fluctuations, dependence upon
regulatory approvals, and the uncertainty of obtaining additional financing and
exploration risk. There is no assurance that mineralization encountered at
Aricheng West will add to U3O8 Corp's resource base. Readers are cautioned that
the assumptions used in the preparation of such information, although considered
reasonable at the time of preparation, may prove to be imprecise and, as such,
undue reliance should not be placed on forward-looking statements.


To view "Figure 1 - Multiple Uranium-Bearing Structures in the Kurupung
Batholith," please visit the following link:
http://media3.marketwire.com/docs/u3o8_corp_mar01_figure01.pdf


To view "Figure 2 - Drill Hole Locations at Aricheng West," please visit the
following link: http://media3.marketwire.com/docs/u3o8_corp_mar01_figure02.pdf


To view the image associated with this press release, please visit the following
link: http://www.marketwire.com/library/20120229-u3o8_corp_mar01_img01.jpg


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