<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Condensed Consolidated Statement of Financial Condition as of March 31, 1998
(unaudited) and the Condensed Consolidated Statement of Operations for the Three
Months Ended March 31, 1998 (unaudited) and is qualified in its entirety by
reference to such financial statements.
</LEGEND>
<MULTIPLIER> 1,000
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               MAR-31-1998
<CASH>                                           3,500
<SECURITIES>                                     4,000
<RECEIVABLES>                                  183,500
<ALLOWANCES>                                         0
<INVENTORY>                                    108,700
<CURRENT-ASSETS>                               322,800
<PP&E>                                         996,500
<DEPRECIATION>                                 376,200
<TOTAL-ASSETS>                               1,757,500
<CURRENT-LIABILITIES>                          357,200
<BONDS>                                        313,300
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           200
<OTHER-SE>                                     716,700
<TOTAL-LIABILITY-AND-EQUITY>                 1,757,500
<SALES>                                        464,700
<TOTAL-REVENUES>                               464,700
<CGS>                                          365,400
<TOTAL-COSTS>                                  365,400
<OTHER-EXPENSES>                                56,200
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               6,000
<INCOME-PRETAX>                                 37,100
<INCOME-TAX>                                    11,100
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    26,000
<EPS-PRIMARY>                                     1.10
<EPS-DILUTED>                                     1.09