<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from
the balance
sheet and statements of income filed as part of the quarterly
report on form
10-q and is qualified in its entirety by reference to such
quarterly report on
form 10-q
</LEGEND>
<MULTIPLIER> 1,000

<S>                                       <C>
<PERIOD-TYPE>                            3-MOS                                                  9-MOS
<FISCAL-YEAR-END>                                                    JUL-31-2000                                JUL-31-2000
<PERIOD-START>                                                       FEB-01-2000                                AUG-01-1999
<PERIOD-END>                                                         APR-30-2000                                APR-30-2000
<CASH>                                                                        58                                         58
<SECURITIES>                                                               1,974                                      1,974
<RECEIVABLES>                                                             13,118                                     13,118
<ALLOWANCES>                                                                 308                                        308
<INVENTORY>                                                               23,012                                     23,012
<CURRENT-ASSETS>                                                          39,643                                     39,643
<PP&E>                                                                   112,059                                    112,059
<DEPRECIATION>                                                           (25,973)                                   (25,973)
<TOTAL-ASSETS>                                                           130,507                                    130,507
<CURRENT-LIABILITIES>                                                     14,157                                     14,157
<BONDS>                                                                   52,317                                     52,317
<PREFERRED-MANDATORY>                                                          0                                          0
<PREFERRED>                                                                  222                                        222
<COMMON>                                                                  28,278                                     28,278
<OTHER-SE>                                                                31,358                                     31,358
<TOTAL-LIABILITY-AND-EQUITY>                                             130,507                                    130,507
<SALES>                                                                   35,209                                    104,873
<TOTAL-REVENUES>                                                          35,209                                    104,873
<CGS>                                                                     30,185                                     88,416
<TOTAL-COSTS>                                                             33,012                                     96,197
<OTHER-EXPENSES>                                                               0                                          0
<LOSS-PROVISION>                                                               0                                          0
<INTEREST-EXPENSE>                                                         1,067                                      3,453
<INCOME-PRETAX>                                                            1,194                                      5,579
<INCOME-TAX>                                                                (742)                                    (1,242)
<INCOME-CONTINUING>                                                        1,936                                      6,821
<DISCONTINUED>                                                                 0                                          0
<EXTRAORDINARY>                                                                0                                          0
<CHANGES>                                                                      0                                          0
<NET-INCOME>                                                               1,936                                      6,821
<EPS-BASIC>                                                               0.17                                       0.61
<EPS-DILUTED>                                                               0.00                                       0.00



</TABLE>