<ARTICLE> 5
<LEGEND>
             Appendix A to Item 601(c) of Regulation S-K
                 Commercial and Industrial Companies
                      Article 5 of Regulation S-X
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                       4,870,254
<SECURITIES>                                   591,318
<RECEIVABLES>                                8,436,357
<ALLOWANCES>                                   100,000
<INVENTORY>                                  2,150,327
<CURRENT-ASSETS>                            17,782,253
<PP&E>                                     138,566,551
<DEPRECIATION>                              76,288,719
<TOTAL-ASSETS>                             112,089,740
<CURRENT-LIABILITIES>                       14,611,349
<BONDS>                                      2,324,000
<COMMON>                                    27,338,375
<PREFERRED-MANDATORY>                          162,500
<PREFERRED>                                  1,692,641
<OTHER-SE>                                   1,248,083
<TOTAL-LIABILITY-AND-EQUITY>               112,089,740
<SALES>                                              0
<TOTAL-REVENUES>                            28,549,273
<CGS>                                                0
<TOTAL-COSTS>                               21,245,775
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             557,450
<INCOME-PRETAX>                              8,964,468
<INCOME-TAX>                                 3,544,456
<INCOME-CONTINUING>                          5,420,012
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 5,420,012
<EPS-PRIMARY>                                     3.62
<EPS-DILUTED>                                     3.59