Kinder Morgan
CenterPoint Energy
El Paso Corp.
Spectra Energy
Midcontinent Express Pipeline
Crosstex Energy
Quicksilver Resources
Plains All-America Pipeline
EPCO Inc.
Chesapeake Energy
Midcontinent Express Pipeline
Dow Chemical
Dynegy Inc.
Lyondell
Global Geophysical
Laclede Gas
Gainesville Regional Utilities
Carolina Gas Transmission
The Southern Gas Association
The Pipeline & Hazardous Materials Safety Administration
The Interstate Natural Gas Association of America (INGAA)

Former Clients
Vastar Resources
Burlington Resources
Pennzoil/Quaker State
Shell Oil
Enron Operations Corp.
Yankee Energy
Illinois Power
Cooper Industries
C2C Fiber
Huntsman Chemical
New York State Electric & Gas
Peoples Gas
Peoples Energy Production
Providence Gas
Entergy
Pioneer Concrete
Occidental Petroleum