BioPharmaMember Since
 Facilities ManagementMember Since
 Manufacturing - SteelMember Since
 Manufacturing - Wood/Consumer ProductsMember Since
 Mining - SurfaceMember Since
 Mining - UndergroundMember Since
 Petrochemical - ChemicalMember Since
 Petrochemical - DownstreamMember Since
 Petrochemical - Midstream (Pipelines)Member Since
Alliance Pipeline View LetterMay 2008
Belle Fourche/Bridger Pipeline View LetterJul 2008
BP Pipelines & Logistics View LetterMar 2002
Buckeye Partners, LP View LetterMar 2002
Chevron Pipe Line Company View LetterSep 2004
Colonial Pipeline View LetterJan 2002
ConocoPhillips Transportation View LetterMay 2002
Dow Pipeline View LetterAug 2003
El Paso Pipelines View LetterFeb 2009
Enbridge Natural Gas Business View LetterOct 2006
Enbridge Pipelines Inc. View LetterApr 2002
Energy Transfer Company View LetterAug 2007
Enterprise Products View LetterJan 2002
Explorer Pipeline View LetterNov 2001
ExxonMobil Pipeline Company View LetterApr 2002
Genesis Energy, L.P. View LetterOct 2003
Holly Energy Partners View LetterAug 2007
Keyera Energy View LetterOct 2008
Kinder Morgan View LetterJan 2002
Koch Pipeline Company, L.P. - Corporate View LetterMar 2001
LDH Energy View LetterAug 2004
LOOP (Louisiana Offshore Oil Port), LLC View LetterJun 2003
NCRA/Jayhawk Pipeline View LetterNov 2006
NuStar Energy, L.P. View LetterJun 2002
NuStar Terminals Limited View LetterJun 2010
ONEOK Distribution View LetterJan 2010
ONEOK NGL Pipeline View LetterSep 2004
ONEOK Services Company View LetterMar 2006
PEMEX View LetterOct 2009
Piedmont Natural Gas View LetterApr 2010
Plains All American Pipeline View LetterMar 2002
Plains Midstream Canada ULC View LetterAug 2008
Shell Pipeline Co. LP View LetterJan 2002
Southern Union Company View LetterOct 2008
Spectra Energy View LetterDec 2008
Sunoco Logistics Partners, LP View LetterJan 2003
Targa Resources View LetterFeb 2008
TransCanada View LetterFeb 2008
Williams Midstream View LetterFeb 2003
Wolverine Pipe Line Company View LetterJun 2003
 Petrochemical - Upstream - OffshoreMember Since
 Petrochemical - Upstream - OnshoreMember Since
Apache Canada Ltd View LetterApr 2006
BG Canada Jan 2009
BP Canada View Letter
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Mar 2010
Cenovus Energy Inc View LetterJul 2008
Chesapeake Energy View LetterOct 2009
Chevron Australia Pty. Ltd. View LetterDec 2008
Chevron Canada Resources View LetterMay 2006
Chevron MidContinent/Alaska Business Unit View LetterSep 2004
Connacher Oil & Gas Limited View LetterApr 2008
ConocoPhillips Alaska View LetterSep 2007
ConocoPhillips Canada View LetterDec 2006
ConocoPhillips Company (Lower 48) View LetterMar 2004
ConocoPhillips Services View LetterDec 2008
Devon Canada Corporation View LetterMay 2007
Devon Energy Corporation View LetterFeb 2004
El Paso E&P Company, L.P. View LetterDec 2005
Encana Corporation [Canadian Division] View LetterJul 2008
EOG Resources Canada, Inc. View LetterFeb 2007
EXCO Resources View LetterSep 2009
Husky Energy View LetterNov 2006
Koch Mineral Services LLC View LetterMar 2006
McMoRan Oil & Gas View LetterJan 2006
Murphy Exploration and Production Company View LetterOct 2009
Nexen Inc. [Canadian Division] View LetterJun 2006
Osum Oil Sands Corp View LetterAug 2009
OXY USA Inc. View LetterSep 2004
Penn West Petroleum Ltd. View LetterAug 2009
Plains Exploration and Production Company View LetterAug 2003
Range Resources View LetterSep 2009
REX Energy View LetterJun 2010
Shell Oil Sands and Downstream [Scotford Complex, Albian Sands, Oil Sands Projects, SMC] View LetterAug 2008
Shell Upstream Americas View LetterOct 2004
SM Energy Company View LetterApr 2008
Southwestern Energy Company View LetterApr 2010
Statoil View LetterFeb 2007
Talisman Energy Inc View LetterJan 2010
Talisman Energy USA Inc. View LetterApr 2010
TC Oil Company View LetterJul 2010
The Shell Company of Australia Limited View LetterApr 2010
Ultra Resources View LetterMay 2010
XTO Energy View LetterFeb 2006
 Utilities, Distribution and Power GenerationMember Since

* This list is based on current ISNetworld subscriptions in good standing.

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With some of the most advanced infrastructure in the industry, Williams Midstream gathers and processes natural gas both onshore, in production hubs like the Rockies, and offshore in the deepwater Gulf.
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