<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM 
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS AND STATEMENTS OF OPERATIONS ON
FORM 10-QSB AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-QSB.
</LEGEND>
<MULTIPLIER> 1
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<CASH>                                         156,291
<SECURITIES>                                         0
<RECEIVABLES>                                3,618,756
<ALLOWANCES>                                    98,000
<INVENTORY>                                  1,727,684
<CURRENT-ASSETS>                             5,710,131
<PP&E>                                      23,179,456
<DEPRECIATION>                              18,792,473
<TOTAL-ASSETS>                              10,475,699
<CURRENT-LIABILITIES>                        2,261,753
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        35,938
<OTHER-SE>                                   8,178,008
<TOTAL-LIABILITY-AND-EQUITY>                10,475,699
<SALES>                                              0
<TOTAL-REVENUES>                            10,883,547
<CGS>                                                0
<TOTAL-COSTS>                                7,137,410
<OTHER-EXPENSES>                             2,797,812
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               3,646
<INCOME-PRETAX>                                951,971
<INCOME-TAX>                                   100,000
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   851,971
<EPS-PRIMARY>                                      .27
<EPS-DILUTED>                                        0