| Case Number | Case Title | Open Date | Closed Date |
| 86-1056-PL-AEC | MARK-OH GAS PIPELINE/MARK PRODUCING | 06/19/1986 | 09/10/1986 |
| 86-1057-PL-AIS | MARK-OH GAS PIPELINE/EDCO DRILLING | 06/19/1986 | 09/10/1986 |
| 86-1262-PL-AIS | BUCKEYE PIPE LINE CO. OF MICHIGAN | 07/18/1986 | 09/23/1986 |
| 86-1863-PL-AEC | MARK-OH GAS PIPELINE CO/SCANDIA | 09/15/1986 | 10/22/1986 |