| Company | MIDWESTERN GAS TRANSMISSION COMPANY |
|---|---|
| Address | 100 W Fifth Street, Tulsa, OK, 74103, USA |
| Title | Secretary |
| Company | CONSTELLATION NEWENERGY - GAS DIVISION MIDCONTINENT, INC. |
|---|---|
| Address | 2639 EAST 33RD PL, TULSA, OK, 74105, USA |
| Title | Secretary |
| Company | ONEOK ENERGY SERVICES COMPANY, II |
|---|---|
| Address | 100 West 5th Street, Tulsa, OK, 74103, USA |
| Title | Secretary |
| Company | NORTHERN BORDER PIPELINE CORPORATION |
|---|---|
| Address | 100 W Fifth Street, Tulsa, OK, 74103, USA |
| Title | Secretary |
| Company | ONEOK NORTH SYSTEM, L.L.C. |
|---|---|
| Address | 100 West 5th Street, Tulsa, OK, 74103, USA |
| Title | Secretary |
| Company | ONEOK SERVICES COMPANY, L.L.C. |
|---|---|
| Address | 100 W FIFTH ST, TULSA, OK, 74103, USA |
| Title | Secretary |