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<b><font style="font-family: 'Times New Roman', Times">Note S.  </font></b>
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<b><i><font style="font-family: 'Times New Roman', Times">Subsequent
Events</font></i></b>
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In February 2011, the Company entered into a purchase and sale
agreement to sell its North Dakota assets for cash consideration
of approximately $196.0 million, subject to customary
purchase price adjustments, and expects to close the divestiture
prior to March 31, 2011. The Company expects to recognize a
gain on this sale in excess of $140.0 million.
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