<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM MAR-31-1996
FINANCIAL STATEMENTS 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>                                          48,481
<SECURITIES>                                    26,509
<RECEIVABLES>                                   36,168
<ALLOWANCES>                                       810
<INVENTORY>                                      1,793
<CURRENT-ASSETS>                               115,043
<PP&E>                                         632,408
<DEPRECIATION>                                  87,470
<TOTAL-ASSETS>                                 845,446
<CURRENT-LIABILITIES>                           44,267
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                      8,840
<COMMON>                                           361
<OTHER-SE>                                     248,794
<TOTAL-LIABILITY-AND-EQUITY>                   845,446
<SALES>                                         35,781
<TOTAL-REVENUES>                                35,781
<CGS>                                            9,541
<TOTAL-COSTS>                                    9,541
<OTHER-EXPENSES>                                 6,401
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             (5,698)
<INCOME-PRETAX>                                 12,044
<INCOME-TAX>                                       693
<INCOME-CONTINUING>                             11,351
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    11,351
<EPS-PRIMARY>                                     0.29
<EPS-DILUTED>                                     0.29