- Southern Natural Gas Co
- Southern Natural Gas Co
- Southern Natural Gas Co
- Southern Natural Gas Co
- Southern Natural Gas Co
- Southern Natural Gas Co
- Southern Star Central Gas
- Southern Star Central Gas
- Southwest Florida Natural Gas
- Southwest Gas
- Southwest Georgia Oil Co
- Star Gas Partners LP
- Star Natural Gas Co
- Steve Starnes Gas Svc
- Sullivan Analytical Svc Inc
- Summit Petroleum Corp
- Superior Pipe Line
- System Supply For End-Users
- Taylor Gas Liquid
- Team Energy Marketing
- Tech Services Co Inc
- TECO Peoples Gas
- TECO Peoples Gas
- TECO Peoples Gas
- TECO Peoples Gas
- TECO Peoples Gas
- Teco Peoples Gas Customer Svc
- Teidata Control Inc
- Teldata Control Inc
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Tennessee Gas Pipeline Co
- Texas Eastern Transmission
- Texas Eastern Transmission
- Texas Eastern Transmission
- Texas Gas
- Texas Gas
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission
- Texas Gas Transmission LLC
- Texas Gas Transmission LLC
- Texas Gas Transmission LLC
- Texas Gas Transmission LLC
- Texas LNG LTD
- Texican Horizon Energy Mktg
- Texican Industrial Energy
- TGR Inc
- Tiger Natural Gas Inc
- Toccoa Natural Gas
- Toccoa Natural Gas
- Triad Energy Resources Corp
- Trunkline Gas Co
- Trunkline Gas Co
- Tulsa Gas Technologies
- Tylex
- UAS
- Us Power & Gas Inc
- Vesta Energy Co
- Wagner & Brown Oil
- Walker Mill Amoco
- Walthall Natural Gas Co Inc
- Warren Distributing
- Warren Petroleum Co
- Warrior Gas Co
- Washington Gas Co
- Washington Gas Co
- Washington Gas Co
- Washington Gas Co
- Washington Gas Light Co
- Washington Gas Light Co
- Washington Gas Light Co
- Washington Gas Light Co
- Washington Gas Light Co
- Washington Parish Gas
- Wayne County Propane
- Wesco
- Wesco LLC
- West Tenn Public Utility Dist
- Westar Transmission
- Westar Transmission
- Western Gas Resources Inc
- Wheeler Basin Natural Gas Co
- William B Ogletree Pe
- William Cable & Assoc
- Williams Companies Inc
- Williams Field Svc
- Williams Gas Pipeline Transco
- Williams Gas Pipelines
- Williams Natural Gas Co
- Willmut Gas Co
- Willmut Gas Co
- Willmut Gas Co
- Woodward Marketing
