- 
			
3-Way, 
				Inc
 
			- 
			
5 Star 
				Production
 
			- 
			
Acadian Ambulance
			 
			- 
			
Al 
				Hartse Inc
 
			- 
			
Alaska 
				Transportation Service Company
 
			- 
			
Alliant Insurance Services
			 
			- 
			
Amback 
				Consulting
 
			- 
			
American Woodmark Corporation
			 
			- 
			
Aquilex / Hydrochem
			 
			- 
			
Archer
			 
			- 
			
Ardent
			 
			- 
			
Ascol 
				QHSE Ltd
 
			- 
			
Ashland Community & Technical College
			 
			- 
			
ASRC 
				Energy Services
 
			- 
			
Atlantic
			 
			- 
			
Atlantic Methanol Production Company
			 
			- 
			
B & N 
				Contractors Inc
 
			- 
			
Baily 
				Brothers Construction
 
			- 
			
Baker 
				Hughes Inc
 
			- 
			
Baker 
				Petrolite Corp
 
			- 
			
BASF 
				Corporation
 
			- 
			
BASF 
				Fina Petrochemicals, LP
 
			- 
			
Basic 
				Energy Services
 
			- 
			
Basin 
				Safety Service
 
			- 
			
Bayer 
				MaterialScience LLC
 
			- 
			
BE & K 
				Construction Company
 
			- 
			
Beaver 
				Excavating
 
			- 
			
Barnette - Benefield
			 
			- 
			
Big G 
				Electric
 
			- 
			
BIS 
				Salamis
 
			- 
			
BJ 
				Services Company
 
			- 
			
BMO
			 
			- 
			
Bob's 
				Oilfield Service
 
			- 
			
BP
			 
			- 
			
Bryant 
				Engineering
 
			- 
			
Burnham & Burnham
			 
			- 
			
C & I 
				Engineering
 
			- 
			
Capita
			 
			- 
			
Capita 
				Health Solutions
 
			- 
			
Catalyst Services
			 
			- 
			
Catlettsburg Refinery, LLC
			 
			- 
			
CCC 
				Group, Inc
 
			- 
			
Cenergy International
			 
			- 
			
Centrilift
			 
			- 
			
CGG 
				Veritas
 
			- 
			
CH2M 
				Hill
 
			- 
			
Champion Technologies
			 
			- 
			
Charles Howard Construction
			 
			- 
			
Cherokee Offshore
			 
			- 
			
Chesapeake Energy Corporation
			 
			- 
			
Chevron
			 
			- 
			
CHS 
				Inc
 
			- 
			
Coenen 
				Consulting, Inc
 
			- 
			
ConocoPhillips
			 
			- 
			
ConocoPhillips Pipe Line Company
			 
			- 
			
Construction & Turnaround Services
			 
			- 
			
Cooley's Welding Inc.
			 
			- 
			
Creek 
				Swabbing and Roustabout
 
			- 
			
Crosby 
				Companies
 
			- 
			
Crowder Services
			 
			- 
			
DQC
			 
			- 
			
DMIC
			 
			- 
			
Dakota 
				Enterprises
 
			- 
			
Delta 
				Production Technology
 
			- 
			
DeSoto 
				Gathering Company, LLC
 
			- 
			
DeSoto 
				Drilling Inc
 
			- 
			
Devon 
				Energy Corp
 
			- 
			
Dillard Consulting
			 
			- 
			
DONG 
				Energy
 
			- 
			
Dril-Quip (Europe) Ltd
			 
			- 
			
Dry 
				Creek Oilfield
 
			- 
			
Early 
				Construction Corporation
 
			- 
			
El 
				Paso Exploration & Production
 
- 
			
Endeavor Energy Resources, LP
 
						- 									
						
EnE 
				Consulting
 
			- 
			
ENSCO 
				Services Limited
 
			- 
			
EOG 
				Resources
 
			- 
			
Equatorial Guinea LNG Operations, SA
			 
			- 
			
Exterran
			 
			- 
			
Fairweather E & P Services
			 
			- 
			
FCI 
				Consulting & Inspection Services
 
			- 
			
Forbis 
				Consultants
 
			- 
			
FMC 
				Technologies, Inc
 
			- 
			
Frear 
				Consulting Inc
 
			- 
			
G M 
				Stewart Corporation
 
			- 
			
GATX 
				Corporation
 
			- 
			
Geokinetics
			 
			- 
			
GES 
				Inc
 
			- 
			
GLM 
				Corporation
 
			- 
			
Global 
				Geophysical Services, Inc
 
			- 
			
Globalogix
			 
			- 
			
Greene's Energy Services
			 
			- 
			
Grey 
				Wolf Holdings
 
			- 
			
Gulley 
				& Son
 
			- 
			
Halliburton
			 
			- 
			
Hanover
			 
			- 
			
Heartland Safety Solutions, LLC
			 
			- 
			
Helmerich & Payne Int'l Drilling Co
			 
			- 
			
Hess 
				Corporation
 
			- 
			
High 
				Country Construction
 
			- 
			
High 
				Country Oilfield Service
 
			- 
			
High 
				Plains, Inc
 
			- 
			
HighMount Exploration & Production LLC
			 
			- 
			
Holly 
				Construction
 
			- 
			
Huntington Testing
			 
			- 
			
HydroChem
			 
			- 
			
I.A.M. 
				Consulting
 
			- 
			
IE 
				Miller
 
			- 
			
IES
			 
			- 
			
IISCO
			 
			- 
			
Impact 
				Instrumentation
 
			- 
			
Inbody's Welding
			 
			- 
			
Industrial Environmental Inc
			 
			- 
			
Industrial Specialists Inc
			 
			- 
			
Infinity Construction Services, LP
			 
			- 
			
Inlet 
				Drilling
 
			- 
			
Insource Technology
			 
			- 
			
Integrated Petroleum Services
			 
			- 
			
International Association of Drilling Contractors
			 
			- 
			
International Brotherhood of Teamsters
			 
			- 
			
Ironside Welding, LLC
			 
			- 
			
JIS 
				Measurement & Operating
 
			- 
			
JMC 
				Transport
 
			- 
			
J & R 
				Well Service, LLC
 
			- 
			
J W 
				Hughes Excavation
 
			- 
			
Jacobson Companies
			 
			- 
			
Jadeco 
				Inc.
 
			- 
			
JP 
				Services LLC
 
			- 
			
Keane 
				Safety
 
			- 
			
Key 
				Energy
 
			- 
			
Kobbe 
				Construction
 
			- 
			
Kuhr 
				Trucking LLC
 
			- 
			
Lemm 
				Corporation
 
			- 
			
Location Builders Inc
			 
			- 
			
Lone 
				Star Deepwater
 
			- 
			
Lubrizol Corporation
			 
			- 
			
M & D 
				Consulting
 
			- 
			
Maersk 
				Oil
 
			- 
			
Maersk 
				Drilling Norge A/S
 
			- 
			
Man 
				Power
 
			- 
			
Marathon Marine Transportation
			 
			- 
			
Marathon Oil Company
			 
			- 
			
Marathon Petroleum Company
			 
			- 
			
Marathon Pipe Line
			 
			- 
			
Master 
				Mechanical Insulation, Inc
 
			- 
			
Matthews, Lawson & Bowick, PLLC
			 
			- 
			
Maxim 
				Crane Works, LP
 
			- 
			
McCulley, Eastham & Associates
			 
			- 
			
McDermott Inc
			 
			- 
			
Meeting Design and Support, Inc.
			 
			- 
			
Melgaard Construction
			 
			- 
			
Merlin 
				ERD Ltd
 
			- 
			
Mesquite
			 
			- 
			
M-I 
				SWACO
 
			- 
			
Midland Safety & Health
			 
			- 
			
Missouri Basin Inc
			 
			- 
			
Mitchell's Oil Field Service
			 
			- 
			
MMI
			 
			- 
			
Mundy 
				Company
 
			- 
			
Municipality of Anchorage
			 
			- 
			
Nabors 
				Well Services Company
 
			- 
			
Nalco
			 
			- 
			
New 
				Prospect Company
 
			- 
			
New 
				Tech Engineering
 
			- 
			
Niblett's Oil Field Services
			 
			- 
			
Noble 
				Drilling
 
			- 
			
Nunez 
				Consulting
 
			- 
			
Oceaneering International Inc
			 
			- 
			
Odfjell Drilling AS
			 
			- 
			
ORR 
				Safety
 
			- 
			
Patterson UTI
			 
			- 
			
PCS
			 
			- 
			
PECO
			 
			- 
			
Pechacek
			 
			- 
			
Pembina Pipeline Company
			 
- 
			
Petrofac
			 
			- 
			
Petroleum Experience Incorporated
			 
			- 
			
PIC
			 
			- 
			
Pioneer Drilling
			 
			- 
			
Pioneer Energy Services
			 
- 
			
Plaster & Wald Consulting
			 
			- 
			
Pollard Wireline
			 
			- 
			
PPC 
				Electrical
 
			- 
			
Preator Const. Inc.
			 
			- 
			
Pritchard Electric
			 
			- 
			
Proforma Safety
			 
			- 
			
PSN
			 
			- 
			
RPS 
				Energy
 
			- 
			
R & M 
				Vacuum Svc
 
			- 
			
R & S 
				Well Service
 
			- 
			
R E P
			 
			- 
			
R J 
				Services
 
			- 
			
Railserve Inc
			 
			- 
			
Resource Service
			 
			- 
			
Richard's Construction Inc
			 
			- 
			
Rick 
				Maley Consulting Inc
 
			- 
			
Ringo 
				Drilling
 
			- 
			
Root-5 
				Ltd
 
			- 
			
Rosetta Resources
			 
			- 
			
Ross 
				Offshore
 
			- 
			
Rowan 
				Drilling Company
 
			- 
			
RPM 
				Consulting
 
			- 
			
Safety 
				Management Systems, Inc.
 
			- 
			
Salamis Services
			 
			- 
			
Schlumberger Oilfield Services
			 
			- 
			
Scott 
				Measurement Services
 
			- 
			
Seawell Drilling
			 
			- 
			
SEECO
			 
			- 
			
Shell
			 
			- 
			
Smitty's
			 
			- 
			
Songa 
				Offshore
 
			- 
			
Southwest Treating
			 
			- 
			
Southwest Research Institute
			 
			- 
			
Southwestern Energy Company
			 
			- 
			
Sparks 
				Engineering
 
			- 
			
Spectra Energy
			 
			- 
			
Speedway SuperAmerica
			 
			- 
			
Stallion Oilfield Services
			 
			- 
			
Star 
				Cooling Towers
 
			- 
			
Starcon
			 
			- 
			
Stark
			 
			- 
			
Steinsvik & Co
			 
			- 
			
Steffes Corporations
			 
			- 
			
Steier 
				Oilfield Service
 
			- 
			
Steinsvik & Co
			 
			- 
			
Steve 
				Nadj Inc
 
			- 
			
Stim - 
				Tech
 
			- 
			
Stokes 
				& Spiehler
 
			- 
			
Sun 
				Well Service
 
			- 
			
Suncor
			 
			- 
			
Swift 
				Energy Company
 
			- 
			
Talisman Energy Inc
			 
			- 
			
T & K 
				Services, Inc
 
			- 
			
TEK 
				Industries
 
			- 
			
Telaxis Communications
			 
			- 
			
Tesoro
			 
			- 
			
Tessco
			 
			- 
			
The 
				Infinity Group
 
			- 
			
The 
				Mundy Companies
 
			- 
			
The 
				Reach Group
 
			- 
			
Timberline Service and Repair
			 
			- 
			
Total 
				Energy Services
 
			- 
			
TORM 
				A/S
 
			- 
			
Transocean
			 
			- 
			
Transport Compliance Services
			 
			- 
			
Threadgold Safety Management
			 
			- 
			
Triad 
				Environmental
 
			- 
			
Trotter Construction, Inc
			 
			- 
			
Udelhoven Oilfield System Services
			 
			- 
			
Universal SoDexHo
			 
			- 
			
University of Louisiana
			 
			- 
			
URS 
				Corporation
 
			- 
			
VECO
			 
			- 
			
Veolia 
				Environmental Services
 
			- 
			
Vetco 
				Gray
 
			- 
			
W B 
				Fosson & Sons, Inc
 
			- 
			
Waukesha-Pearce Industries, Inc
			 
			- 
			
Waha 
				Oil Company
 
			- 
			
Walsh 
				Welding Inc
 
			- 
			
Warner's Roustabout
			 
			- 
			
Weatherford
			 
			- 
			
Weaver 
				Brothers Inc
 
			- 
			
Weaver 
				Testing
 
			- 
			
Wil-Call 
				Services
 
			- 
			
Williston State College
			 
			- 
			
Wood 
				Group
 
			- 
			
Wyoming Casing Service, Inc
			 
			- 
			
Xodus
			 
			- 
			
Zachry 
				Construction Corporation