Great Western Mining Corporation plc

December 30, 2008 03:00 ET

Third Bulk Sample Test Results

                                                                                           30 December 2008
                                     GREAT WESTERN MINING CORPORATION PLC

                                        Third Bulk Sample Test Results

Great Western Mining Corporation plc announced today results of the third bulk sample bottle roll leaching
tests carried out by an independent American research laboratory which has the capacity for handling
radioactive ores.

It would appear that the Acid/Cyanide leaching programme is giving the most cost effective recovery of the
uranium, gold and silver values.

Excerpts of the results are given below:



I have attached a copy of the datasheets for the Acid/Cyanide leaching of the WT Cohan 481/482 samples at - 10
mesh and ¼" grind.  A summary of the recovery throughout the leaches can be found on the first two pages, which
shows the uranium recovery in acid leaching as well as the gold and silver recovery in the cyanide leaching.
The cyanide leaching detail is in the subsequent pages. The main points of the data are reproduced here (these
are on a calculated head basis):

Grind   Uranium extraction       Au Extraction    Ag Extraction
-10 mesh        98%                   84%              73%
¼"              96%                   70%              51%

You will recall that the bicarbonate/cyanide leaching produced the following:
-10 mesh        12%                   64%              40%
¼"              13%                   54%              33%

So a similar trend is seen where the finer grind size produces better extraction.  It is clear that the acid
leach, while also extracting nearly all the uranium in the ore appears to free up more of the precious metals
so they are more completely extracted.

A Competent Persons Report is currently being prepared and is expected to recommend a work programme for 2009
intended to determine the extent of the ore body.
The Directors of the issuer accept responsibility for this announcement.

Note to Editor

Great Western Mining Corporation plc (ticket symbol GWMO) is a Dublin based exploration company with 11.4
square kilometres of mineral claims in Mineral County, Nevada.

Shares of the Company are listed on the PLUS Market in London. It was awarded the prize of "Best Resource Stock
of 2008" on the PLUS Market.

For further information:
Emmett O'Connell
Fax: +353-51-565884

Liam McGrattan
Director, Investor Relations

Corporate Advisors
St Helen's Capital Plc
Tel: +44 207 628 5582

Nick Rome
Bishopsgate Communications Ltd.
Tel: +44-207-562-3366


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