<ARTICLE>                  5
<MULTIPLIER>               1,000

                                         
<PERIOD-TYPE>                               9-MOS
<FISCAL-YEAR-END>                           DEC-31-1999
<PERIOD-END>                                SEP-30-1999
<CASH>                                            1,465
<SECURITIES>                                          0
<RECEIVABLES>                                    51,691
<ALLOWANCES>                                       (277)
<INVENTORY>                                      11,450
<CURRENT-ASSETS>                                104,649
<PP&E>                                        1,070,084
<DEPRECIATION>                                 (482,377)
<TOTAL-ASSETS>                                  694,717
<CURRENT-LIABILITIES>                            90,590
<BONDS>                                         319,000
<COMMON>                                        195,728
<PREFERRED-MANDATORY>                                 0
<PREFERRED>                                      56,700
<OTHER-SE>                                      (70,123)
<TOTAL-LIABILITY-AND-EQUITY>                    694,717
<SALES>                                         119,607
<TOTAL-REVENUES>                                122,031
<CGS>                                           101,990
<TOTAL-COSTS>                                   101,990
<OTHER-EXPENSES>                                      0
<LOSS-PROVISION>                                      0
<INTEREST-EXPENSE>                               19,674
<INCOME-PRETAX>                                   5,386
<INCOME-TAX>                                      2,338
<INCOME-CONTINUING>                               3,048
<DISCONTINUED>                                        0
<EXTRAORDINARY>                                       0
<CHANGES>                                             0
<NET-INCOME>                                      3,048
<EPS-BASIC>                                      0.02
<EPS-DILUTED>                                      0.02