<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEET AT MARCH 31, 2000 AND THE CONSOLIDATED STATEMENT OF OPERATIONS FOR
THE THREE MONTHS ENDED MARCH 31, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          JUN-30-1999
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                       3,793,286
<SECURITIES>                                15,604,430
<RECEIVABLES>                               15,936,601
<ALLOWANCES>                                   567,620
<INVENTORY>                                    747,919
<CURRENT-ASSETS>                            33,682,824
<PP&E>                                      52,291,025
<DEPRECIATION>                              26,558,771
<TOTAL-ASSETS>                              85,738,060
<CURRENT-LIABILITIES>                       12,023,395
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                     4,734,450
<OTHER-SE>                                  65,707,055
<TOTAL-LIABILITY-AND-EQUITY>                85,738,060
<SALES>                                     12,784,115
<TOTAL-REVENUES>                            14,030,734
<CGS>                                       10,930,652
<TOTAL-COSTS>                               15,659,015
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                              8,734,040
<INCOME-TAX>                                 3,110,000
<INCOME-CONTINUING>                          5,624,040
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 5,624,040
<EPS-BASIC>                                       5.15
<EPS-DILUTED>                                     5.14