<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-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                             646
<SECURITIES>                                    20,214
<RECEIVABLES>                                   63,070
<ALLOWANCES>                                       807
<INVENTORY>                                     13,507
<CURRENT-ASSETS>                               104,306
<PP&E>                                         470,696
<DEPRECIATION>                                 215,329
<TOTAL-ASSETS>                                 381,969
<CURRENT-LIABILITIES>                           73,195
<BONDS>                                        128,969
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         3,091
<OTHER-SE>                                     130,313
<TOTAL-LIABILITY-AND-EQUITY>                   381,969
<SALES>                                         15,634
<TOTAL-REVENUES>                                78,668
<CGS>                                           11,974
<TOTAL-COSTS>                                   52,938
<OTHER-EXPENSES>                                17,644
<LOSS-PROVISION>                                  (93)
<INTEREST-EXPENSE>                               2,545
<INCOME-PRETAX>                                  6,422
<INCOME-TAX>                                     2,421
<INCOME-CONTINUING>                              4,001
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,001
<EPS-PRIMARY>                                      .20
<EPS-DILUTED>                                      .20