Energy Transfer Partners ()
Panhandle Eastern PL Co ()
California Gas Transmission Co ()
Texas Gas Transmission Co ()
Colonial ()
Northwestern Energy Co ()
ONEOK Westex Pipeline ()
TEPPCO ()
Transwestern Gas Co ()
Colorado Interstate Gas Co ()
Williston Basin Interstate PL Co ()
Northern Illinois Gas Co ()
TransOk Pipeline Co ()
Dominion Transmission Co ()
Enbridge Pipelines (East Texas) ()
Trunkline Gas Co ()
Central West Refined Products Pipeline System ()
Enogex Inc ()
ONEOK Gas Transmission LLC ()
Mississippi River Trans Corp ()
Columbia Gulf Pipeline ()
TEPPCO ()
Southern California Gas Co ()
Plantation ()
Lakehead ()
