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INCOME TAXES
6 Months Ended
Sep. 30, 2012
INCOME TAXES

(K) INCOME TAXES

Income taxes for the interim period presented have been included in the accompanying financial statements on the basis of an estimated annual effective tax rate. In addition to the amount of tax resulting from applying the estimated annual effective tax rate to pre-tax income, we will, when appropriate, include certain items treated as discrete events to arrive at an estimated overall tax amount. The effective tax rate for both the three and six months ended September 30, 2012 was approximately 31%, which increased from the prior year due to the reduction in the impact of our depletion deduction as a result of increased earnings in fiscal year 2013.