<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
June 30, 1995 year to date consolidated financial statements and is
qualified in its entirety by reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1995
<PERIOD-START>                             JAN-01-1995
<PERIOD-END>                               JUN-30-1995
<CASH>                                           3,950
<SECURITIES>                                         0
<RECEIVABLES>                                   52,679
<ALLOWANCES>                                       663
<INVENTORY>                                      1,983
<CURRENT-ASSETS>                                73,163
<PP&E>                                         468,729
<DEPRECIATION>                                 113,688
<TOTAL-ASSETS>                                 431,615
<CURRENT-LIABILITIES>                           48,020
<BONDS>                                        152,897
<COMMON>                                           308
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     194,762
<TOTAL-LIABILITY-AND-EQUITY>                   431,615
<SALES>                                              0
<TOTAL-REVENUES>                               274,502
<CGS>                                                0
<TOTAL-COSTS>                                  246,722
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0<F1>
<INTEREST-EXPENSE>                               4,689
<INCOME-PRETAX>                                 23,362
<INCOME-TAX>                                     8,936
<INCOME-CONTINUING>                             14,426
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    14,426
<EPS-PRIMARY>                                      .46
<EPS-DILUTED>                                      .46
<FN>
<F1>Provision for doubtful accounts included in costs and expenses applicable
to revenues.
</FN>