<ARTICLE> 5 <MULTIPLIER> 1 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> JUN-30-1999 <CASH> 2,471,619 <SECURITIES> 0 <RECEIVABLES> 75,411,382 <ALLOWANCES> 0 <INVENTORY> 115,219,914 <CURRENT-ASSETS> 213,009,875 <PP&E> 801,541,618 <DEPRECIATION> 87,649,663 <TOTAL-ASSETS> 954,474,353 <CURRENT-LIABILITIES> 67,660,357 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 491,833 <OTHER-SE> 366,335,881 <TOTAL-LIABILITY-AND-EQUITY> 954,474,353 <SALES> 284,113,039 <TOTAL-REVENUES> 284,113,039 <CGS> 226,870,916 <TOTAL-COSTS> 19,018,056 <OTHER-EXPENSES> 2,109,827 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 11,439,090 <INCOME-PRETAX> 25,178,806 <INCOME-TAX> 10,069,295 <INCOME-CONTINUING> 15,109,510 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 15,109,510 <EPS-BASIC> .32 <EPS-DILUTED> .31