<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                             263
<SECURITIES>                                         0
<RECEIVABLES>                                   15,363
<ALLOWANCES>                                     (400)
<INVENTORY>                                      3,782
<CURRENT-ASSETS>                                19,008
<PP&E>                                         634,240
<DEPRECIATION>                                 326,214
<TOTAL-ASSETS>                                 327,034
<CURRENT-LIABILITIES>                           18,279
<BONDS>                                        134,000
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                         18
<COMMON>                                           163
<OTHER-SE>                                     159,798
<TOTAL-LIABILITY-AND-EQUITY>                   327,034
<SALES>                                         31,274
<TOTAL-REVENUES>                                31,576
<CGS>                                           15,864
<TOTAL-COSTS>                                   17,503
<OTHER-EXPENSES>                                   104
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               2,476
<INCOME-PRETAX>                                 11,493
<INCOME-TAX>                                     2,299
<INCOME-CONTINUING>                              9,194
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     9,194
<EPS-BASIC>                                        .47
<EPS-DILUTED>                                      .40