<ARTICLE>           5
<LEGEND>            THIS SCHEDULE CONTAINS SUMMARY FINANCIAL 
                    INFORMATION EXTRACTED FROM THE 
                    COMPANY'S UNAUDITED FINANCIAL STATEMENTS
                    AS OF AND FOR THE PERIOD ENDING MARCH 31,
                    1996, AND IS QUALIFIED IN ITS ENTIRETY BY     
                    REFERENCE TO SUCH FINANCIAL STATEMENTS 
</LEGEND>
<MULTIPLIER>                         1,000
<FISCAL-YEAR-END>                    DEC-31-1996
<PERIOD-END>                         MAR-31-1996
<PERIOD-TYPE>                        3-MOS


<CASH>                                           10,802
<SECURITIES>                                          0
<RECEIVABLES>                                    50,664
<ALLOWANCES>                                          0
<INVENTORY>                                      12,744
<CURRENT-ASSETS>                                 81,851
<PP&E>                                          260,175
<DEPRECIATION>                                  112,768
<TOTAL-ASSETS>                                  232,122
<CURRENT-LIABILITIES>                            38,080
<BONDS>                                               0
<COMMON>                                         18,079
<PREFERRED-MANDATORY>                                 0
<PREFERRED>                                           0
<OTHER-SE>                                       89,613
<TOTAL-LIABILITY-AND-EQUITY>                    232,122
<SALES>                                         101,421
<TOTAL-REVENUES>                                101,545
<CGS>                                            91,038
<TOTAL-COSTS>                                     2,835
<OTHER-EXPENSES>                                      0
<LOSS-PROVISION>                                      0
<INTEREST-EXPENSE>                                1,340
<INCOME-PRETAX>                                   6,332
<INCOME-TAX>                                      2,375
<INCOME-CONTINUING>                               3,957
<DISCONTINUED>                                        0
<EXTRAORDINARY>                                       0
<CHANGES>                                             0
<NET-INCOME>                                      3,957
<EPS-PRIMARY>                                      0.22
<EPS-DILUTED>                                      0.22