<ARTICLE> 5
<LEGEND>
This schedule contains financial information extracted from SEC filing Form 10-Q
and is qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               MAR-31-1996
<CASH>                                             214
<SECURITIES>                                         0
<RECEIVABLES>                                   68,604
<ALLOWANCES>                                     2,781
<INVENTORY>                                     15,348
<CURRENT-ASSETS>                                94,428
<PP&E>                                         559,599
<DEPRECIATION>                                 210,909
<TOTAL-ASSETS>                                 881,241
<CURRENT-LIABILITIES>                           91,783
<BONDS>                                              0
<COMMON>                                           300
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     467,405
<TOTAL-LIABILITY-AND-EQUITY>                   881,241
<SALES>                                        146,303
<TOTAL-REVENUES>                               146,303
<CGS>                                                0
<TOTAL-COSTS>                                  136,206
<OTHER-EXPENSES>                                (1,189)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               3,453
<INCOME-PRETAX>                                  7,833
<INCOME-TAX>                                     3,447
<INCOME-CONTINUING>                              4,386
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,386
<EPS-PRIMARY>                                     0.15
<EPS-DILUTED>                                     0.15