<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONDENSED
CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF EARNINGS 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-END>                               MAR-31-1996
<CASH>                                           1,828
<SECURITIES>                                    16,984
<RECEIVABLES>                                   62,670
<ALLOWANCES>                                       606
<INVENTORY>                                     10,135
<CURRENT-ASSETS>                               102,619
<PP&E>                                         506,917
<DEPRECIATION>                                 182,224
<TOTAL-ASSETS>                                 496,206
<CURRENT-LIABILITIES>                           72,041
<BONDS>                                        164,867
<COMMON>                                         3,091
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                     205,468
<TOTAL-LIABILITY-AND-EQUITY>                   496,206
<SALES>                                         11,682
<TOTAL-REVENUES>                                92,903
<CGS>                                            9,440
<TOTAL-COSTS>                                   61,462
<OTHER-EXPENSES>                                21,464
<LOSS-PROVISION>                                    16
<INTEREST-EXPENSE>                               3,315
<INCOME-PRETAX>                                  8,379
<INCOME-TAX>                                     3,139
<INCOME-CONTINUING>                              5,240
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     5,240
<EPS-PRIMARY>                                      .20
<EPS-DILUTED>                                      .20