Energy

ABB Vetco Gray
Air Liquide Corporation
American Association of Drilling Engineers
Anadarko Petroleum Corporation
Baker Hughes
BG Group
BHP Billiton Petroleum
BP
CenterPoint Energy
Chevron Texaco
Columbia Gulf Transmission
Conoco Incorporated
Conoco Phillips Exterran
Exxon Company, U.S.A.
ExxonMobil
Halliburton Energy Services
Houston Lighting & Power
Huntsman Chemical
LINN Energy
LyondellBasell
Marathon Oil Corporation
Nabors Corporate Services
Pride International
Schlumberger
Shell Chemical Company
Shell Exploration & Production
Shell Oil Company
Shell Trading
Southwestern Energy
Spectra Energy
Transocean Inc.

Education/Government

Harris County Precinct 4
Spring Branch ISD
Rice University and its Jones Graduate School
University of Houston
University of Houston Downtown

Nonprofit

American Red Cross
CAnCare
Child Advocates
First United Methodist Church
Harris County Hospital District Foundation
Neighborhood Centers
SEARCH
United Way of the Texas Gulf Coast

Financial/Legal

American Red Cross
AIM Management
Bracewell & Giuliani
Sterling Bank

Health Care

Harris County Hospital District
Memorial Hermann Healthcare System
St. Luke’s Episcopal Hospital