<ARTICLE> 5
<MULTIPLIER> 1,000,000
       
                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                              54
<SECURITIES>                                         0
<RECEIVABLES>                                    1,432
<ALLOWANCES>                                        15
<INVENTORY>                                      1,685
<CURRENT-ASSETS>                                 3,472
<PP&E>                                          25,528
<DEPRECIATION>                                  15,466
<TOTAL-ASSETS>                                  17,284
<CURRENT-LIABILITIES>                            3,523
<BONDS>                                          2,932
<PREFERRED-MANDATORY>                              432
<PREFERRED>                                          3
<COMMON>                                           375<F1>
<OTHER-SE>                                       5,022
<TOTAL-LIABILITY-AND-EQUITY>                    17,284
<SALES>                                         22,375
<TOTAL-REVENUES>                                22,588
<CGS>                                           20,883
<TOTAL-COSTS>                                   20,883
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 352
<INCOME-PRETAX>                                  1,358
<INCOME-TAX>                                       450
<INCOME-CONTINUING>                                908
<DISCONTINUED>                                      80
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                       988
<EPS-PRIMARY>                                        0<F2>
<EPS-DILUTED>                                        0<F3>
<FN>
<F1>Consists of Marathon Stock issued, $289; Steel Stock issued, $86.
<F2>Basic earnings (loss) per share applicable to Marathon Stock, $1.59; Steel
Stock, $5.24; Delhi Stock $8.43.
<F3>Diluted earnings (loss) per share applicable to Marathon Stock, $1.58; Steel
Stock, $4.88; discontinued operations - Delhi Stock, $8.41.
</FN>