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Natural Gas Transmission

Gas Transmission Companies

   Xtx Pipeline Company LLC

   Flint Hills Resoures

   Targa North Texas Gp LLC

   Coal Properties Corporation

   Magnolia Gathering Inc

   Kinder Morgan Inc

   Mid Louisiana Natural Gas Transmission Company

   Blue Dolphin Exploration CO

   Energy Transfer Equity, L P

   Energy Transfer Partners Lp

   Oneok Westex Transmission

   Enbridge Pipeline CO

   Spectra Energy Corp

   Oneok, Inc

   Florida Gas Transmission Company, LLC

   Tenneco Gas Gathering

   Devon Gas Services, L P

   Shoreline Gas, LLC

   Mojave Pipeline Company

   El Paso Field Services, L P

   Midcoast Gas Pipeline Inc

   Spectra Energy Corp

   El Paso Field Services, L P

   Pg And E Gas Transmission Texas

   Oneok, Inc

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Natural Gas Transmission

   El Paso Field Services, L P

   Magnet Pipeline Gas & Oil Service

   Anr Pipeline Company

   Houston Pipe Line Company Lp

   United Texas Transmission Co

   Pioneer Gas Pipeline Inc

   Texas Eastern Transmission, Lp

   Paa Natural Gas Storage Lp

   Tet Radio Control

   Schuch Pipeline Partnership

   Tennessee Gas Pipeline CO

   Anr Pipeline CO

   Williams Gas Pipeline Transco

   Southcross Alabama Gathering Systems, L P

   Oasis Pipeline, Lp

   Mme Desoto Pipeline, Lp

   Estrella Energy

   Acadian Gas Pipeline Systems

   Northwest Gas Pipeline

   Rubicon Oil & Gas LLC

   Etc Fayetteville Operating Company, LLC

   Atmos Pipeline And Storage, LLC

   Aber Oil & Gas

   Precision Pipeline Company

   Enterprise Products Holdings LLC

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Storage, Natural Gas

   Cardinal Gas Storage Partners LLC

   Trinity Storage Services, L P

   El Paso Field Services Lp

   Tres Palacios Gas Storage

   Greyhawk Gas Storage Company, LLC

   Trinity Storage Service

   Enstor Operating CO

   Blue Canyon Windpower Ii LLC

   Sequent Energy Management Lp

   Tlt Oil & Gas Inc

   Enstor

   Chestnut Ridge Storage LLC

   Cardinal Gas Storage Partners LLC

   Mississippi Hub, LLC

   Ryckman Creek Resources, LLC

   Hill Lake Gas Storage, Lp

   Moss Bluff Hub Partners Lp

   Crystal Gas Storage Inc

   Moss Bluff Hub, LLC

   Sg Resources Mississippi, L L C

   Central Oklahoma Oil & Gas Corp

   Peregrine Midstream Partners LLC

   Rtw Terminal Lp

   Falcon Gas Storage CO Inc

   Enron Storage Company

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