Richfield announced today that it has given an expiry acceleration notice to holders of warrants that were issued in connection with private placements that closed on September 11, 2009, December 14, 2009 and September 17, 2010. Richfield has exercised its right to abridge the expiry to 5:30 pm on May 6, 2011 in respect of 5,063 warrants with an exercise price of $0.25, 2,027,055 warrants with an exercise price of
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