3M
ABB Flexible Automation, Inc.
Agere Systems
Alabama Governor's Conference
American Industrial Hygiene Association
American Society of Safety Professionals
Ameren
AMGEN
Anadarko
ANECO

Apache Corporation
Aquilex HydroChem
Arkansas Environmental Federation
Arizona Public Services
Armstrong World Industries

Ashland Specialty Ingredients
Asso. of Energy Services Companies
ATK
Austin Industries
Babcock & Wilcox
Baker Oil Tools

Balfour Beatty Rail
Bay Area Human Resource Mgmt Association
BHP Minerals
Blattner Energy
Bloomsdale Excavating
BNSF
Bowen EHS, Inc.
British Columbia Maritime Employers Association
British Petroleum
Brown Printing

Cabot Oil & Gas
Calpine
Canadian National Railways
Capform
Captive Resources
Carolinas Healthcare System
Champion Technologies
ChevronPhillips
Chevron Pipe Line Company
Chevron USA Production Co.
CIC Group Inc - Nooter Construction
City of Friendswood, TX
CMC Steel Group
Continental Airlines
Cox Communications
Crane Army Ammunition Activity
Crestwood Midstream Partners LP
Cummins Inc.
DCP Midstream
Devon Energy
Diamond Offshore
Duke Energy Field Services
Duke Energy International
Dynegy
EDW C. Levy Co.
Enbridge
Enerflex Energy Systems
ENRON
Entergy
EOTT Energy
ESSO Imperial Oil
Ethos Energy

ExxonMobil
FairfieldNodal (Industries)
Fastenal
Fort Dearborn
Frito-Lay
Fugro McClelland Marine Geosciences
Gallagher Captive Services
Genesis Energy, L.P
Glanbia
Glen-Gery
Greenhill Petroleum
Greif
Harrah's
Herman Miller
HR Houston
Humble ISD
Imperial Sugar

Innovative Risk Management
Iowa 80 Group
IVEY Mechanical
Karis Resources
KBR/Brown & Root, Inc.
Klein ISD
LG & E Power Services
Lift-It Manufacturing

Lockheed Martin Aeronautics
L'Oreal

Louisiana Governor's Conference
Louisiana Public Risk Management Association
Lubrizol
Lucent
Maxim Group
MBM Food Services
Michigan Safety Conference
Minnesota Power
Minnesota Safety Council
Missouri Safety Council
Mister Car Wash
Mitchell Energy & Develop. Corp.
Motiva Enterprises
NAES
NASA
National Asso. Construction Boilermaker Employers
National Asso. Pipe Coating Applicators
National Gas Odorizing
National Oilwell Varco
National Safety Council
Nebraska Public Power District
New Jersey State Safety Council
New York City School Construction Authority
Noble Midstream Partners

Northern Colorado Water Conservancy District

Nutrien
Occidental Chemical Corp.
Oil States Industries
Oklahoma Gas & Electric
Oklahoma Safety Council
Oldcastle BuildingEnvelope
Old Republic
OneSource Toxicology

Orbital ATK
Orion Marine Group
PABCO

Panda Power Fund
Pitchfork Land & Cattle Co.
Potlatch Corporation
Professional Services Group
Quanta Services, Inc.
Quicksilver Resources
R & D Maintenance Services
Red Cedar Gathering
Reliant Energy
Republic Steel
RMF Nooter
RSC Rental Service
SABIC Americas
Safety Incentives
Sandia National Laboratories
Schilli Corp.
Schlumberger Dowell, Inc.

Schmidt Construction
Sempra Utilities
Society of Petroleum Engineers

Southcross Energy
Southdown (CEMEX)
Southern Ute Indian Tribe Growth Fund

Southland Industries
Stewart & Stevenson
TKS Stanley

Tellepsen
TELXON
TEPPCO
TEPSCO
Tetra Technologies
Texas Association of Counties
Texas Chemical Council
Texas Safety Association
The Woodlands Operating Co.
Tietex International LTD
Toyota

TU Services
University of Alabama-CCS
University of Texas-Arlington
URS Flint Energy Services, Inc
USAA