
<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
       
<S>                                        <C>
<PERIOD-TYPE>                                 6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                           1,512
<SECURITIES>                                         0
<RECEIVABLES>                                   35,763
<ALLOWANCES>                                     2,997
<INVENTORY>                                     13,080
<CURRENT-ASSETS>                                71,195
<PP&E>                                         422,796
<DEPRECIATION>                                 (76,694)
<TOTAL-ASSETS>                                 538,791
<CURRENT-LIABILITIES>                          125,383
<BONDS>                                        247,090
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           194
<OTHER-SE>                                     131,163
<TOTAL-LIABILITY-AND-EQUITY>                   538,791
<SALES>                                        199,329
<TOTAL-REVENUES>                               199,329
<CGS>                                          150,893
<TOTAL-COSTS>                                  150,893
<OTHER-EXPENSES>                                23,818
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               7,343
<INCOME-PRETAX>                                 17,275
<INCOME-TAX>                                     7,208
<INCOME-CONTINUING>                             10,087
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                  (400)
<CHANGES>                                            0
<NET-INCOME>                                     9,667
<EPS-PRIMARY>                                     0.49
<EPS-DILUTED>                                        0
        

</TABLE>
