Anadarko Petroleum
Axley& Rode
BDO Seidman
BKD
Briggs & Veselka Co.
CenterPoint Energy
The Dow Chemical Company
EEPB
Ernst & Young
Fitts, Roberts, & Co.
Gary W. Lambert & Company
Grant Thornton
Harper & Pearson Company, P.C.
Hein & Associates LLP
Jaynes, Reitmeier, Boyd & Therrell
Melton & Melton
Newfield Exploration
PricewaterhouseCoopers
Southwestern Energy
UHY Advisors
Weinstein Spira & Co