<ARTICLE> 5
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1993
<PERIOD-END>                               SEP-30-1994
<CASH>                                         314,900
<SECURITIES>                                     8,300
<RECEIVABLES>                                1,433,500
<ALLOWANCES>                                    41,900
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<CURRENT-ASSETS>                             3,416,200
<PP&E>                                      14,175,600
<DEPRECIATION>                               7,671,200
<TOTAL-ASSETS>                              11,323,500
<CURRENT-LIABILITIES>                        2,149,600
<BONDS>                                      1,240,800
<COMMON>                                        89,200
<PREFERRED-MANDATORY>                                0
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<OTHER-SE>                                   3,463,400
<TOTAL-LIABILITY-AND-EQUITY>                11,323,500
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<CGS>                                        5,762,600
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<LOSS-PROVISION>                                     0
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<INCOME-TAX>                                    88,400
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<DISCONTINUED>                                       0
<EXTRAORDINARY>                               (67,900)
<CHANGES>                                            0
<NET-INCOME>                                     7,200
<EPS-PRIMARY>                                      .07
<EPS-DILUTED>                                      .07