<ARTICLE> 5

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                       5,456,900
<SECURITIES>                                         0
<RECEIVABLES>                               16,430,300
<ALLOWANCES>                                   326,600
<INVENTORY>                                    525,200
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<PP&E>                                     129,987,300
<DEPRECIATION>                              34,345,400
<TOTAL-ASSETS>                             127,142,600
<CURRENT-LIABILITIES>                       28,138,400
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       162,400
<OTHER-SE>                                  76,615,800
<TOTAL-LIABILITY-AND-EQUITY>               127,142,600
<SALES>                                     35,157,500
<TOTAL-REVENUES>                            63,567,600
<CGS>                                       31,255,900
<TOTAL-COSTS>                               56,828,200
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                               270,000
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<INCOME-TAX>                                 1,550,200
<INCOME-CONTINUING>                          5,189,200
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<NET-INCOME>                                 5,189,200
<EPS-BASIC>                                      .32
<EPS-DILUTED>                                      .32