<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from SEC Form
10-Q/A for quarter ending March 31, 1998 and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                          17,229
<SECURITIES>                                         0
<RECEIVABLES>                                   45,715
<ALLOWANCES>                                     1,202
<INVENTORY>                                      6,778
<CURRENT-ASSETS>                                76,388
<PP&E>                                         509,402
<DEPRECIATION>                                  81,616
<TOTAL-ASSETS>                                 596,185
<CURRENT-LIABILITIES>                           69,995
<BONDS>                                        315,749
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           124
<OTHER-SE>                                     150,284
<TOTAL-LIABILITY-AND-EQUITY>                   596,185
<SALES>                                         74,912
<TOTAL-REVENUES>                                74,912
<CGS>                                           49,483
<TOTAL-COSTS>                                   59,106
<OTHER-EXPENSES>                                   793
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               5,455
<INCOME-PRETAX>                                  9,558
<INCOME-TAX>                                     4,110
<INCOME-CONTINUING>                              5,448
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                  (299)
<CHANGES>                                            0
<NET-INCOME>                                     5,149
<EPS-PRIMARY>                                      .42
<EPS-DILUTED>                                      .42