<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> MAR-31-1997 <PERIOD-START> APR-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 4,158 <SECURITIES> 0 <RECEIVABLES> 43,736 <ALLOWANCES> 640 <INVENTORY> 12,003 <CURRENT-ASSETS> 65,272 <PP&E> 241,077 <DEPRECIATION> 53,461 <TOTAL-ASSETS> 254,963 <CURRENT-LIABILITIES> 29,155 <BONDS> 47,000 <PREFERRED-MANDATORY> 62,845 <PREFERRED> 0 <COMMON> 91,953 <OTHER-SE> (12,852) <TOTAL-LIABILITY-AND-EQUITY> 254,963 <SALES> 199,743 <TOTAL-REVENUES> 199,743 <CGS> 115,747 <TOTAL-COSTS> 115,747 <OTHER-EXPENSES> 12,852 <LOSS-PROVISION> 15 <INTEREST-EXPENSE> 2,763 <INCOME-PRETAX> 68,381 <INCOME-TAX> 20,119 <INCOME-CONTINUING> 48,262 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 48,262 <EPS-PRIMARY> 1.03 <EPS-DILUTED> 1.03