Issue of Equity in connection with increasing stake in AusPotash Corporation

Details Company Name: Sirius Exploration Plc Ticker: SXX Date Posted: Monday, 21st December 2009 Price: 5.4 (as of Friday, 18th December 2009)

Further  to  the announcement made on 29 September 2009, Sirius (AIM: SXX, OTC: SRUXY) announces  that  it  has today  completed the purchase of a further 250,000 common shares of AusPotash (the "Transaction"), representing 0.44  per  cent  of the issued and outstanding common shares of AusPotash at a price of CAD$0.40 per  AusPotash share  purchased.  As a result of the Transaction, Sirius now has an interest in 68.82 per cent  of  AusPotash. Sirius  has  issued  500,000  new  Ordinary Shares at a price of 11.25p per  share  in  consideration  for  the Transaction.  Further  to this Transaction, 17,392,581 common shares of AusPotash remain  to  be  purchased  by Sirius and the Company will notify the market when these are completed in due course.

Accordingly, 500,000 new Ordinary Shares of 0.25p per share ("Ordinary Shares") have been issued and  allotted. Application  will  be  made for 500,000 new Ordinary Shares, which will when issued rank pari  passu  with  the existing Ordinary Shares in issue, to be admitted to trading on AIM and trading is expected to commence  on  30 December 2009.

Following  the issue of the new Ordinary Shares as set out above, the total number of shares in issue  will  be 62,528,170.