Editors Note: There are three photos associated with this press release. 

Macusani Yellowcake Inc. (the "Company") (TSX VENTURE:YEL)(FRANKFURT:QG1) is
pleased to announce preliminary results from tests conducted on four leach
solutions with tenors ranging from 7 to 531 ppm uranium. Two resin types
exhibited high uranium removal characteristics in single stage tests. Resin type
I achieved removal efficiencies of 76 to 96.5% while resin type II achieved
removal efficiencies of 65 to 93.0%. In two stage tests, uranium removal
efficiency reached was in excess of 99.6% for resin type I.


President and CEO, Dr. Laurence Stefan, stated: "The recent ion exchange tests
have found a suitable ion exchange resin capable of achieving above 99% removal
of uranium from pregnant leach solutions. The results demonstrate the excellent
applicability of the ion exchange technology for the uranium recovery from
Macusani leach solutions. The use of ion exchange instead of solvent extraction,
for the first stage of uranium recovery from leach solution, on the Macusani
plateau has the advantages of reduced organic solvent losses through evaporation
and reduced solvent extraction waste stream production. These advantages are
positive both financially and environmentally." 


Four pregnant leach solution (PLS) samples were dispatched to South Africa for
ion exchange testing that were run under the supervision of Ed Hardwick of
Cwenga Technologies, Johannesburg. The four feed solutions were first assayed
for elements: uranium, aluminium, iron and calcium (see Table 1). The results
indicated that only uranium was of commercial interest. 


Table 1: Pregnant Leach Solution Assay Results



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Contained Elements                 Sample 1   Sample 2   Sample 3   Sample 4
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                                        ppm        ppm        ppm        ppm
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Aluminium                              1035         73        548        731
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Iron                                    239         91        232        234
----------------------------------------------------------------------------
Calcium                                 587        255        468        594
----------------------------------------------------------------------------
Uranium                                 531         77         19        6.7
----------------------------------------------------------------------------



Each solution was then contacted with four ion exchange (IX) resins types to
check for potential uranium selectivity. Feed solution was contacted with each
resin for two hours, decanted and analysed for uranium. 


Table 2 contains the before and after tenors for sixteen shaking tests. The
uranium removal efficiencies for these single stage tests are shown in Figure 1.



Table 2: Ion Exchange Resin Shake Test Results



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Description                        Sample 1   Sample 2   Sample 3   Sample 4
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                                      ppm U      ppm U      ppm U      ppm U
----------------------------------------------------------------------------
Feed solution tenor                     537         71         18        6.0
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Resin I - discharge tenor                80        2.5        1.6        1.4
----------------------------------------------------------------------------
Resin II - discharge tenor              186        5.0        2.5        1.7
----------------------------------------------------------------------------
Resin III - discharge tenor             331         15        9.4        4.4
----------------------------------------------------------------------------
Resin IV - discharge tenor              507         22         15        5.8
----------------------------------------------------------------------------



To view Figure 1: Ion Exchange Uranium Removal Results, please visit the
following link: http://media3.marketwire.com/docs/yel_sept6_figure01.pdf


Both of these ion exchange resins (resin types I and II) were subsequently used
for ion exchange testing in standard glass columns, in a two stage arrangement
shown in Figure 2. Non-adsorption of uranium (high uranium tenor at the second
pass column outlet) was high for resin type II. Resin type I was therefore
isolated as the best resin from the four pre-selected resins.


To view Figure 2: Ion Exchange Column Test Arrangement, please visit the
following link: http://media3.marketwire.com/docs/yel_sept6_figure02.pdf


Solution sample quantities restricted the number of tests. There was sufficient
volume to test Sample 1 (530 ppm U) and a blend of Samples 2 and 3 (56 ppm U).
Figure 3 illustrates the two stage ion exchange column tests for Sample 1. The
volume of solution processed is expressed in terms of Bed Volumes (BVs). The bed
volume is the volume of the bed of ion exchange resin in each column, 50
milliliters in this case. The overall uranium removal efficiency throughout the
two stage test was greater or equal to 99.6%. The blended sample test provided
comparable results over the volume of solution processed for Sample 1.


In order to achieve and maintain these high uranium recoveries in a continuous
process the resin should be removed from service, before it is completely
loaded, and replaced by fresh resin. This extra process may have economic
implications and environmental concerns. If the resin is changed-over (replaced)
when the first stage removal has dropped to 96% and 4% of the uranium (21 ppm U
for a feed tenor of 530 ppm U - Sample 1) is still left in solution can be
recycled back to the leaching process, which eliminates these economic and
environmental implications. Such a target change over point is also shown in
Figure 3.


To view Figure 3: Ion Exchange Column Test Results, please visit the following
link: http://media3.marketwire.com/docs/yel_sept6_figure03.pdf


In conclusion, the recent ion exchange tests have found a suitable ion exchange
resin capable of achieving a minimum of over 96% removal of uranium from
pregnant leach solutions in a single stage and over 99% for a two stage system.
Any remaining uranium would be returned to the process, and no uranium would be
released, increasing the final uranium removal from pregnant leach solution to
above 99%. 


The Company believes that these test results are very encouraging and
informative for the further development of the project. These ion exchange tests
have determined working parameters for subsequent tests. Numerous tests have
since been conducted in Lima, Peru, achieving equally encouraging results, which
will be the subject of a future press release. Further ion exchange tests are
planned followed by the investigation of the subsequent resin stripping, solvent
extraction and precipitation stages. Initial bench-scale tests are to be
conducted and would then progress to pilot plant tests.


Qualified Person

Dr. Thomas Apelt, PhD (Chemical Engineering), CP(Met) MAusIMM, CEng MIChemE,
Senior Process Engineer with GBM Mining Engineering Consultants Limited, an
independent consultant to the Company, is a Qualified Person as defined under
National Instrument 43-101 and has reviewed and approved the scientific and
technical data contained in this release.


About Macusani Yellowcake

Macusani Yellowcake Inc. is a Canadian uranium exploration and development
company focussed on the exploration of its properties on the Macusani Plateau in
south-eastern Peru. The Company has concessions which cover over 90,000 hectares
(900 km2) and are situated near significant infrastructure. Macusani Yellowcake
is listed on the TSX Venture Exchange under the symbol 'YEL' and the Frankfurt
Exchange under the symbol 'QG1'. The Company has 167,047,475 shares outstanding.
For more information please visit www.macyel.com.


This news release includes certain forward-looking statements concerning the
future performance of Macusani's business, operations and financial performance
and condition, as well as management's objectives, strategies, beliefs and
intentions. Forward-looking statements are frequently identified by such words
as "may", "will", "plan", "expect", "anticipate", "estimate", "intend" and
similar words referring to future events and results. Forward-looking statements
are based on the current opinions and expectations of management. All
forward-looking information is inherently uncertain and subject to a variety of
assumptions, risks and uncertainties, including the speculative nature of
mineral exploration and development, fluctuating commodity prices, competitive
risks and the availability of financing, as described in more detail in the
Company's recent securities filings available at www.sedar.com. Actual events or
results may differ materially from those projected in the forward-looking
statements and Macusani cautions against placing undue reliance thereon. Neither
Macusani nor its management assume any obligation to revise or update these
forward-looking statements.