| Filed On | Filing |
|---|---|
| 27 Apr 2001 | U-13-60 FOR COLUMBIA ENERGY FOR 12/31/2000 |
| 22 Apr 1999 | FORM U-13-60 COLUMBIA ENERGY GROUP SERVICE CORP. |
| 30 Apr 1998 | COLUMBIA ELECTRIC CORPORATION U-13-60 |
| 30 Apr 1997 | FORM U-13-60 COLUMBIA SERVICE PARTNERS, INC. |
| 30 Apr 1997 | FORM U-13-60 - TRISTAR VENTURES CORPORATION |
| 26 Apr 1996 | FORM U-13-60 TRISTAR VENTURES CORPORATION |
| 01 May 1995 | TRISTAR VENTURES CORPORATION ANNUAL REPORT |
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