EXHIBIT 12
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
Three Months Ended
Mar. 31 Mar. 31
2003 2002
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(Thousands of Dollars)Income before income taxes, extraordinary
items and cumulative effect of accounting
changes $18,427 $14,470
Amortization of capitalized interest 699 721
Interest expense 10,161 8,035
Interest portion of rental expense 314 683
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Earnings $29,601 $23,909Interest $ 9,834 $ 8,163
Interest portion of rental expense 314 683
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Fixed Charges $10,148 $ 8,846
======== ========Ratio of Earnings to Fixed Charges 2.92 2.70
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